Videos uploaded by user “itfreetraining”
MCITP 70-640: Active Directory forest and trees
Active Directory has forests and trees which are ways of representing multiple domains. Check out http://YouTube.com/ITFreeTraining or http://itfreetraining.com for more of our always free training videos.This video looks at how domains sharing the same namespace are considered a tree. Domains in separate namespaces are considered separate trees in the same forest. Tree When you have multiple domains in the same namespace (e.g., ITFreeTraining.com, west.ITFreeTraining.com, and sales.ITFreeTraining.com), they are considered to be in the same tree. The tree also supports multiple levels of domains. For example, you could have west.sales.ITFreeTraining.com and east.ITFreeTraining.com in the same tree. Forest A forest is a collection of one or more domains which may have one or more trees. What makes a forest unique is that it shares the same schema. The schema defines what and how Active Directory objects are stored. The schema defines the database for the whole forest but it should be remembered that each domain in the forest has its own copy of the database based on the schema. Trusts Parent and child domains are automatically linked by a trust. Users in different domains can use these trusts to access resources in another domain assuming that they have access. Trees in the forest are linked together via a trust automatically. This ensures that any users in any domain in the forest can access any resource in the forest to which they have access. Global Catalog In order for users to find resources in any domain in the forest (remember that each domain has a separate database), Domain Controllers can be made into Global Catalog Servers. A Global Catalog Server contains partial information about every object in the forest. Using this information, the user can conduct searches.
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MCITP 70-640: Introduction To Active Directory
Active Directory is a system which offers centralized control of your computers. Check out http://YouTube.com/ITFreeTraining or http://itfreetraining.com for the rest of our always free training videos. This video looks at what Active Directory is and why you would use it. The video explains the difference between a workgroup and a domain so you can better understand when you would want to deploy Active Directory. Terminology used in the video Workgroup A workgroup is a network setup in which each computer on the network keeps its own store of user names and passwords. In order to access another computer on the network, you need to know a username and password on that computer. This does not scale well. The user will be prompted for a username and password when he or she accesses another computer when the passwords are not in sync. HomeGroup Available only in a pure Windows 7 network. HomeGroup provides a simple way to share files and printers in a network. HomeGroup allows Windows 7 computers to be grouped together to share each other's resources using just one centralized password. Domain A domain is a logical group of computers that share the same Active Directory database. A domain allows you to manage a group of computers rather than one by one. This is done through the central use of usernames and passwords and the configuration of computers using group policy. Domain Controller A Domain Controller is a Windows Server that has Active Directory Services roles configured on it by using a process called promotion. The Domain Controller holds a writeable copy of the Active Directory database. Each domain has at least one Domain Controller but more should be added for redundancy. Active Directory Database Active Directory uses a database to hold objects like users and settings. The database uses multi-master replication and thus can have multiple copies of the database stored in multiple locations around the world. Each of these copies is writeable. Active Directory automatically fixes any replication conflicts that may occur by using a last writer wins system. That is, the latest update of any object is used when there is a replication conflict. Domain Links Active Directory supports multiple domains to be linked together by using a trust. Each domain has a separate Active Directory database but resources can be shared between the different domains.
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MCITP 70-640: Operation Master Roles
Active Directory has five operations master roles otherwise known as FSMO roles. Check out http://itfreetraining.com for more of our always free training videos. These roles are assigned to one Domain Controller to ensure changes happen in only one location at a time. This ensures that the Active Directory database is kept consistent. This video goes through the five operations master roles. At the forest level, there is the Schema Master and Domain Naming Master. At the domain level, the 3 other operational roles are Infrastructure Master, PDC Emulator and RID Master. Schema Master 01:32 Domain Naming Master 03:01 RID Master 03:53 PDC Emulator 07:06 Infrastructure Master 11:03 Schema Master (Forest Wide) The Schema Master determines the structure and thus what can be stored in Active Directory. It contains details of every object that can be created and the attributes for that object. For example, if you want to add an attribute to every user in the forest (such as a field with the user's pay grade in it), you would add an attribute to the schema to accommodate this change. It is important to think carefully before making changes to the schema as changes to the schema can't be reversed but they can be disabled. If you want to test changes to the schema, create a new forest and make your changes there so the production environment is not affected. Domain Naming Master (Forest Wide) The Domain Naming Master is responsible for ensuring that two domains in the forest do not have the same name. Relative ID Master (RID Master) This master role allocates RID pools. A RID is a sequential number that is added to the end of a SID. A SID, or security identifier, is required for every Active Directory object. An example of a SID is shown here: S-1-5-21-1345645567-543223678-2053447642-1340. The RID is the last part of the SID, in this case 1340. The RID Master allocates a pool or block of RIDs to a Domain Controller. The Domain Controller uses the RID pool when Active Directory objects are created. The Domain Controller will request a new RID pool before it runs out. However, keep in mind that if you create a lot of Active Directory objects at once, the RID Master will need to be online to allocate new RID pools. If the Domain Controller runs out of RIDs and can't contact the RID Master, no objects in Active Directory can be created on that Domain Controller. PDC (Primary Domain Controller) Emulator Originally the PDC Emulator provided a bridge between Windows NT4 Domain Controllers and Windows Server 2000 Domain Controllers. Even if you do not have any NT4 Domain Controllers on your network, it still provides some services. The PDC Emulator forms the root of the time sync hierarchy in your domain. All other Domain Controllers will sync their time from this Domain Controller. Your clients and servers will in turn sync their time from their local Domain Controller. You should configure the PDC to sync its time from an external time source to ensure that it is accurate. When a user enters in a wrong password, the PDC Emulator may be contacted to find out if this password is in fact an updated password. Password changes are replicated to the PDC Emulator first and thus it is considered the final authority on correct and incorrect passwords. The PDC Emulator is contacted when changes to DFS (Distributed File System) are made. This can be switched off if the load on the PDC Emulator becomes too great. Infrastructure Master The Infrastructure Master is responsible for ensuring that objects that use multiple domain references are kept up to date and consistent. When you are in a single domain you don't need to worry about this. In a multiple domain environment with Windows Server 2000/2003 Domain Controllers, you must ensure that the Domain Controller that is holding the Infrastructure Master role is not a Global Catalog Server or all of the Domain Controllers will be Global Catalog Servers. If the Domain Controller is a Global Catalog Server this can cause objects in the domain not to update correctly. If you only have Windows Server 2008 Domain Controllers, you don't need to worry about whether the Infrastructure Master is on a Global Catalog Server or not.
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MCITP 70-640: Sites and Subnets
Check out http://YouTube.com/ITFreeTraining or http://itfreetraining.com for more of our always free training videos. Active Directory allows you to model your physical network topology using sites. This video looks at how to create sites in Active Directory. Creating sites allows you to control how data is replicated in your organization. Demonstration 04:05 Sites Definition Microsoft defines a site as a group of well-connected networks. Advantages of sites 1) Sites automatically direct users to the closest resource. 2) Schedules can be configured that allow the administrator to control when replication will occur. Site design Multiple networks can be combined together regardless of which IP address ranges they use. If you have two networks separated by a high speed networking device, you may want to combine these networks together. Usually networks that are separated by a Wide Area Network will be put into different sites. You could also place different networks into different sites for security reasons. For example, if you had a secure network holding your intellectual property separated by a firewall, you may decide to put this network in its own site to reduce the amount of traffic travelling between the networks. Less traffic travelling between the networks means fewer rules that have to be created on the firewall between the networks. Protect objects from accidental deletion A lot of objects in Active Directory have the option to protect the object from accidental deletion. The tick box for this will be found in the properties for the object on the object tab. If the option is ticked and an attempt to delete the object or move the object is made, an access denied message will be displayed. To perform either of these actions, the tickbox needs to be cleared first. Demonstration To create or change the site configuration, open Active Directory Sites and Services from administrative tools under the start menu. When you first install Active Directory, a site will be created called Default-First-Site-Name. This site can be renamed to another site, deleted when no longer required, or simply not used. Under the site container, the Domain Controller/s for that site will be listed. When you promote a server to a Domain Controller, the wizard will look at the IP address of the server and suggest a site in which to put the Domain Controller or you can choose your own. For this reason, the Domain Controller should be put into the correct site when it is promoted assuming the site existed. If you need to physically move the Domain Controller or it has been put into the wrong site, you can move the Domain Controller object to another site at any time. To create a new site, right click sites and select new site. The network address will then need to be entered (either the IPv4 or IPv6 network address).
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MBR and GPT Partition Tables
The partition table on a drive determines the structure of the data and this video will look at the MBR and GPT partition tables. Check out http://YouTube.com/ITFreeTraining or http://itfreetraining.com for more of our always free training videos. In some cases the operating system will choose the partition table for you, however having an understanding of the partition tables will help you understand what features each has as well as any compatibility problems that may occur due to the choice of partition table. Download the PDF handout http://ITFreeTraining.com/handouts/se... Partition Tables Before data can be stored on a device like a hard disk, a partition table needs to be created. This partition table defines where the data can be stored on the device. For example, if you had a 3 terabyte hard disk, you could create 2 partition tables. One partition could be 1 terabyte in size while the other could be 2 Terabytes in size. The partition table essentially determines which part of the hard disk can be used for what. There are two different partition types available. These are MBR (Master Boot Record) and GPT (GUID Partition Table). MBR is the older style that offers more compatibility while GPT is newer and offers more features, most notably, it supports larger devices. In some cases, GPT may require particular hardware in order to run. Master Boot Record (MBR) MBR has been around since the first PC's were released. For this reason it should work on all computers, meaning it has great compatibility with existing hardware. MBR is limited to 4 primary partitions. To increase the number of partitions that could be created on a single drive, one of the MBR partitions could be converted into an extended partition. This extended partition contains configuration allowing additional partitions to be created. In DOS days, there could only be 26 partitions on one hard disk: 3 primary partitions and one extended partition that contained 23 additional partitions. This was a limitation due to each drive requiring a drive letter and thus a limit of 26 letters in the alphabet. In later operating systems more than 26 partitions could be created using extended partitions. The biggest limitation of MBR is that it can only use 2 Terabytes of space. If you have a drive bigger than 2 Terabytes, MBR can be used, but any space after 2 Terabytes will not be useable and thus will be wasted. GUID Partition Table (GPT) The GPT partition table supports 128 primary partitions and thus does not require any extended partitions. The main advantage of the partition table is it supports drives in the Zettabyte size. 1 ZB = 1 000 000 000 000 000 000 000 bytes or 10 to power of 21 bytes or 1 billion terabytes. In order to boot an operating system for a GPT partition, you require a hard disk that supports "Unified Extensible Firmware Interface" or UEFI. This was designed to be a replacement for the older system called "Basic Input/Output System" or BIOS. The operating system also needs to support booting. For Windows this means Windows XP and Windows 2003 64 bit editions or above. For Linux most distributions should support both 32bit and 64bit operating systems. It is matter of checking the distribution to ensure it does. All modern Linux distributions should support this. If the hardware or operating system does not support booting, it is possible that the operating system will still be able to read the drive as a data drive. Every Windows operating system including and after Windows Vista and Windows Server 2003 SP1 will support GPT as a data drive. Converting between the two If your hard disk is less than 2 terabytes, use MBR. This will offer you the most compatibility. If you do need to change between the two, most likely GPT to MBR, Windows can convert the drive; however, it will first need to have all the partitions removed thus erasing all the data on the drive. Third-party software is available for Windows which can convert the partition table without losing the data. Otherwise there is Linux software which can perform the conversion. Before converting the partition table, make sure that you back up all data on the drive. See http://YouTube.com/ITFreeTraining or http://itfreetraining.com for our always free training videos. This is only one video from the many free courses available on YouTube. References "Installing and Configuring Windows Server 2012 Exam Ref 70-410" pg 42 - 43 "GUID Partition Table" http://en.wikipedia.org/wiki/GUID_Par... "http://en.wikipedia.org/wiki/Partitio..." http://en.wikipedia.org/wiki/Partitio... "Extended boot record" http://en.wikipedia.org/wiki/Extended...
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DNS Forwarding and Conditional Forwarding
This video will look at how DNS forwarding works and how conditional forwarding works. Forwarding is when a DNS request is forwarded from one DNS server to another. Conditional forwarding is when a condition is applied to which DNS requests are forwarding and which are not. Download Handout http://ITFreeTraining.com/Handouts/DNS/DNSForwarding.pdf DNS Forwarding DNS forwarding is the process of forwarding a DNS request from one DNS server to another. The most common example of this is when a company forwards its internal DNS server to its ISP's DNS server. Since the ISP DNS server will receive a lot more resolve requests than the internal DNS server, there is a higher possibility that when a client asks for a DNS hostname to be resolved, the DNS server may have resolved the DNS name previously and have it stored in the DNS cache, meaning the hostname will not need to be resolved again. DNS Forwarding In some companies, they may want to prevent their internal DNS servers accessed by not having them directly accessible on the internet. To do this, a DMZ is created with a DNS server that has access to the internet. The company then uses another DNS server on their internal network. This internal DNS server forwards requests to the DMZ DNS server which forwards DNS requests to the ISP's DNS server. This means the internal DNS server does not access the internet directly and thus helps protect it. If the DMZ DNS server was to be attacked, the DNS records on the internal DNS would be protected. Conditional Forwarding Conditional forwarding is only performed if a condition is met. In this example, DNS requests for the other domain are forwarded to the other company's DNS server. All other DNS requests are forwarded directly to the ISP's DNS server. See http://YouTube.com/ITFreeTraining or http://itfreetraining.com for our always free training videos. This is only one video from the many free courses available on YouTube.
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MCITP 70-640: Active Directory Under The Hood
Check out http://YouTube.com/ITFreeTraining or http://itfreetraining.com for more of our always free training videos. Active Directory utilizes two main standards. These are the X.500 standard and LDAP. This video looks at how the X.500 standard is used to store the Active Directory objects in the database. It also looks at how LDAP is used to access this data and the formatting LDAP uses. NTDS.DIT The Active Directory Database by default is stored in c:\windows\NTDS\ntds.dit. This file is based on the X.500 standard. Originally Active Directory was called NT Directory Services and this is where the file got its name. Each domain in Active Directory will have a separate database. Domain Controllers hold the copy of the database in the ntds.dit file and replicate changes to each other. If you have more than one domain, then each separate domain will have its own copy of the ntds.dit file. Organization Units In order to organize objects in Active Directory more easily, objects in Active Directory can be organized into Organization Units, also known as OUs. These OUs are like folders on your hard disk. LDAP Syntax LDAP uses a syntax that refers to the most significant part first followed by less significant or precise parts afterwards. This is the opposite of other systems, like filenames or paths. The main syntax of any LDAP command is like this example: CN=Joe, OU=Users, DC=ITFreeTraining, DC=Com. When an object can be defined uniquely, like in this example, it is called the distinguished name. Canonical Name (CN) This is the name of the object in Active Directory that you want to access. For example, if you wanted to access a user called Joe, you would use CN=Joe. Organization Unit (OU) Organization units in Active Directory are used to sort objects into different areas or folders. If you have multiple OUs, then start with the lowest in the tree and expand downwards. For example if a user was in Users\Acounts\Payable you would use OU=Users, OU=Accounts, OU=Payable. Domain Component (DC) This is the domain in which the object is located. For example DC=ITFreeTraining, DC=com.
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Type 1 and Type 2 Virtualization
This video will look at the different types of virtualization available on the market referred to as type 1 and type 2. Check out http://YouTube.com/ITFreeTraining or http://itfreetraining.com for more of our always free training videos. Understanding how these types work will give you a better understanding of which one you should use to meet your needs. Access the rest of the course: http://ITFreeTraining.com/hyperv Download the PDF handout: http://ITFreeTraining.com/handouts/hyperv/types.pdf Type 1 & Type 2 Virtualization 00:11 Type 2 was the first virtualization system to be developed. It is designed to run on an existing operating system. The virtual machines running in the virtualization solution connect to a hypervisor which translate the instructions into operating system instructions which are then handled by the operating system. Since the operating system is needed to access the hardware, this is slower than if the virtual machines had a direct route to the hardware. The advantage of type 2 is they do not require any special hardware in order to run. With Type 1 virtualization, the operating system and any virtual machines run through the same hypervisor. This makes it faster than type 2. In order for type 1 to work, special hardware requirements are required. For example, the CPU and BIOS need to support virtualization. Type 1 & Type 2 Virtualization Examples 01:34 Type 1: Hyper-V and vSphere. The advantage of Hyper-V is that it can be run on the same computer running Windows. vSphere, in contrast, requires a dedicated computer that can only be used to run vSphere. Microsoft has also supplied a Hyper-V standalone version if you want to run Hyper-V on a dedicated computer. Type2: Microsoft Virtual PC, Microsoft Virtual Server, VMWare Workstation and VirtualBox. The advantage of these is that they can be installed on Windows and do not require special hardware. Hyper-V 02:20 Hyper-V is sometimes mistaken for a Type 2 virtualization solution. This is because unless you are using the stand-alone version, you require an operating system. Without the Hyper-V role installed, the operating system uses a HAL (Hardware Abstraction Layer) to access the hardware. When Hyper-V is installed, the HAL is replaced by a Hypervisor and the operating system and virtual machines access the hardware through the hypervisor. So essentially the hypervisor is a HAL with additional features required for virtual machines. See http://YouTube.com/ITFreeTraining or http://itfreetraining.com for our always free training videos. This is only one video from the many free courses available on YouTube. References “Installing and Configuring Windows Server 2012 R2 Exam Ref 70-410” pg 132 - 133 “Hypervisor” http://en.wikipedia.org/wiki/Hypervisor
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MCITP 70-640: Group Policy Introduction
This video provides an overview of Group Policy. Explaining the basic of how Group Policy works and what can be achieved using Group Policy. Check out http://YouTube.com/ITFreeTraining or http://itfreetraining.com for more of our always free training videos. Download the pdf handout for this video from http://ITFreeTraining.com/handouts/70-640/part3/gpintroduction.pdf What is Group Policy Group Policy is a system that allows central control of your client computers. Using Group Policy you can control the user experience. This includes configuring settings for the user and also settings that affect the computer as a whole. Group Policy can also be used to deploy and configure software. Text Based Config Files Before systems like Group Policy were developed, settings were often kept in text files like ini files. In order to make changes to the ini file, software would rewrite the whole file each time a change was made. Text files were not designed for multiple user environments and don't support rolling back of changes. Registry Microsoft introduced the registry to replace text files like ini files. Editing a single value in the registry is a lot easier than editing a single value in a text file. The problem with the registry is that once a change is made, the changes are permanent until overwritten by another value. Group Policy Group Policy allows changes to be rolled back when they no longer apply. This means that the effects of Group Policy will be reversed when they no longer are being applied. This means users and computers can be moved around Active Directory and thus the Group Policy for these objects may change. Since Group Policy reverses any previously made changes, the administrator does not need to worry about what settings were previously applied. Group Policy Mechanics Group Policy is created and stored on a Domain Controller. Group Policy is downloaded from the Domain Controller to the local computer and applied. For this reason Group Policy is a client driven technology. It is up to the client to download Group Policy and apply it. Group Policy is applied by Client Side Extensions (CSE). Each operating system improves and adds CSE's, meaning new clients can process some Group Policy settings that the older clients may not be able to process. For a list of all the CSE's installed on a system, refer the following registry setting. HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\GPExtensions Group Policy Example A single Group Policy is divided in two parts called Computer Configuration and User Configuration. Settings that are configured under computer configuration affect the whole computer. Settings configured under user configuration affect only the user that is currently logged in. The user and computer configuration is divided into two parts called Polices and Preferences. Preferences was a late edition to Windows Server 2008. Microsoft purchased another product called Policy Maker and added this product to Group Policy. The essential different between the two is that Group Policy is mandatory while preferences can often be overwritten by the user. Polices are divide into 3 parts, Software settings, Windows Settings and Administrative Templates. Software settings, like installations, are done in here. Windows Settings are more broad stroke settings having an effect on how the computer operates at a low level rather than specific functions. Administrative templates contain the bulk of the Group Policy settings. Summary Group Policy settings are stored in Active Directory. They are client driven and thus the client is responsible for downloading the group Policy settings and applying them. Group Policy settings are applied to the client by software called client side extensions. If a particular Group Policy settings require a particular client side extension and if that client side extension is not available, the Group policy settings will not be applied to that computer or user. Group Policy itself is divided primarily into two halves, user configuration and computer configuration. Computer configuration is applied when the computer starts up, while user configuration is applied when the user logs into the computer. References "MCTS 70-640 Configuring Windows Server 2008 Active Directory Second Edition" pg. 250-251, 254 "Group Policy "http://en.wikipedia.org/wiki/Group_Policy
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Configuring DNS Forwarding Conditional Forwarding
This video will look at how to configure DNS forwarding and conditional forwarding on Windows Servers. Forwarding allows all DNS requests to be forwarded to a particular server and conditional forwarding allows you to configure certain DNS queries to be sent to a particular DNS server. http://itfreetraining.com/handouts/dns/dnsforwardingdemo.pdf Demonstration Setting up forwarding To change the forwarding settings, open DNS manager. This can be run from the tools menu from server manager or running DNS from administrative tools in the control panel. The forwarding settings are located in the properties for the DNS server. To access these, right click on the server in DNS manager and select properties. If you do not have your DNS server listed, you will need to add it by right clicking DNS and selecting the option connect to DNS server. From the properties of the DNS server, select the forwarders tab. On the forwarders tab, press the button edit and then add the addresses of the DNS servers that you want to forward DNS requests to. Setting up conditional forwarding To configure conditional forwarders, first open DNS manager from the tools menu in server Manager or run DNS from Administrative tools. From DNS manager, right click Conditional forwarders and select the option New Conditional Forwarder. In the New Conditional Forwarder window, enter in the DNS domain that you want to forward DNS requests for and then add the DNS server that can answer DNS requests for that DNS domain. When you create the conditional forwarder, you also have the option to store that conditional forwarder in Active Directory. If you decide to tick this option, the conditional forwarder configuration can be replicated to all domains in the forest or only to DNS server in the current domain. It should be remembered that only DNS servers that are running on Domain Controllers will be able to access this information if you decide to use this feature. Clear local cache If you are having problems resolving an address or it is being resolved to the wrong address, it may be that the local computer has stored the result in the local cache. To remove this information, run the following command. Ipconfig /flushdns See http://YouTube.com/ITFreeTraining or http://itfreetraining.com for our always free training videos. This is only one video from the many free courses available on YouTube. References None
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What are certificates?
Certificates are used to prove identity and used for creating secure communication. Check out http://itfreetraining.com for more of our always free training videos. This video looks at how a certificate works, what is a certificate and how they are used for identification and secure communication. Download the PDF handout http://itfreetraining.com/Handouts/Certificates/WhatAreCertificates.pdf What is a certificate? A certificate is an electronic document that contains data fields. When compared to a traditional paper certificate there are some similarities between an electronic certificate and a physical certificate. Digital certificates like a physical certificate are issued by an authority. For example, a university may issue a certificate to a student to show that they have completed the necessary work in order to graduate. The next question is, would you trust a physically certificate? Digital certificates work the same way. They are issued from an authority and the question becomes would you trust the authority that issued the certificate? Electronic certificates also contain other fields like who or what the certificate was issued to, how long it is valid, the public key and the digital signature. If a digital certificate is presented to a user or computer, the user or computer is able to check the certificate to ensure the person using it should be using it. Also the certificate contains a digital signature which allows the certificate to be checked to make sure it has not been modified. Digital Signature A digital signature provides a method for a certificate to be checked to ensure it has not been modified. In order to do this, a hash value is created for the certificate. To generate a hash value the certificate is put through a function to create a single value. Hash functions are designed so different certificates will not produce the same value, however the hash value cannot be used to generate the original certificate. The same principal applies to a person's fingerprints. They can be used to identify a person, however using a finger print you could not work out the features of a person like what color hair they have. When a certificate is created, the hash value for that certificate is also created. Using a function involving the private key, a digital signature is created and added to the certificate. Digital Signature Example When a certificate is used, in order to check the certificate has not been changed, the following is done: The computer generates the hash value for the certificate. Next, the digital signature is put through a function using the public key which should result in the same hash value. If both values match, the certificate has not been modified. This prevents a 3rd party taking a certificate, changing the values in the certificate and using the certificate. Trust Model Certificates work off a trust model. An example of a trust model in computers is that a computer may have a sticker on it indicating which operating systems it will run. The consumer, seeing this sticker, must trust that the manufacture would not put this sticker on the laptop unless it will run that operating system. The customer must also trust the creator of that operating system would not allow a computer manufacturer to put a sticker on a computer that would not run that operating system. Certificate Trust Model Certificates are generally deployed in a hierarchy. At the top is the root certificate authority. This can be an internal Certificate Authority or an external authority like VeriSign. When an authority like VeriSign issues a certificate, they will perform a number of checks on the individual purchasing the certificate to ensure that they are a valid business. When a certificate is used it can be checked to see which authority issued that certificate. In order for the certificate to be used, the computer must trust the authority that it was issued from. Authorities like VeriSign are trusted by default on most operating systems. Certificate Error If a certificate is presented to the computer and it is not trusted, the computer will generate an error asking if the users want to trust the certificate. It is up to the user to decide if they believe the certificate is valid. Certificate Hierarchy Certificates use a hierarchy. At the top is the root CA, below these are subordinate CA's. Any level can issue certificates to subordinate CA's or direct to users, computers or devices. If the user, computer or device trusts the root CA, then any certificate that is issued by any CA in the hierarchy will automatically be trusted and thus used by the client. References "MCTS 70-640 Configuring Windows Server 2008 Active Directory Second edition" pg 771-775 "Public key certificate" http://en.wikipedia.org/wiki/Public_key_certificate
Views: 397049 itfreetraining
MCITP 70-640: Group Policy Loopback Processing
Loopback processing allows the administrator to apply user Group Policy settings based on where the computer accounts are located rather than basing it on the user account. This is an invaluable setting to use when deploying kiosk computers where you do not want the user settings to be applied. Download the PDF handout for this video from http://ITFreeTraining.com/handouts/70-640/part3/group-policy-loopback-processing.pdf Loopback Processing Loopback processing changes the algorithm used to apply Group Policy to a computer. This allows the administrator to effectively ignore or merge the user configuration that would be normally applied to the computer. Group Policy Normal Processing Group Policy is divided into two halves, Computer Configuration and User Configuration. Group Policy loopback processing changes the way these two halves are applied and where the settings are obtained from. Without Loopback Processing enabled, when the computer starts up, Computer Configuration from Group Policy is applied. This is applied based on where the computer account is located in Active Directory. User configuration is applied when a user logs in based on where the user account is located in Active Directory. Group Policy Loopback Processing (Replace) When Computer Configuration is applied to the computer, there is a setting in computer configuration that will enable Group Policy Loopback Processing for replace mode. When enabled, this will change how user configuration is applied. Instead of user configuration being applied based on where the user account is in Active Directory, user settings are applied based on where the computer account is located in Active Directory. Demonstration Loopback processing is configured via the following setting. Computer Configuration\Polices\Administrative Templates\System\Group Policy\User Group Policy loopback processing mode This setting can be configured for merge or replace mode. Merge mode is explained below. Group Policy Loopback Merge When Merge mode is enabled, Group Policy is first applied like it would be normally. That is, the computer configuration based on where the computer account is located in Active Directory and user configuration based on where the user account is located in Active Directory is applied. The difference is that an extra step is added. The extra step applies user configuration based on where the computer account is located in Active Directory. This is often used for Remote Desktop Services where you want the user to have their user settings applied, but want the option to override or add additional settings as required. See http://YouTube.com/ITFreeTraining or http://itfreetraining.com for our always free training videos. This is only one video from the many free courses available on YouTube. References "MCTS 70-640 Configuring Windows Server 2008 Active Directory Second edition" pg 294 -- 295 "Loopback processing of Group Policy" http://support.microsoft.com/kb/231287 "Group Policy Loopback Processing" http://timstechnoblog.blogspot.com.au/2012/01/group-policy-loopback-processing.html
Views: 74840 itfreetraining
Share and NTFS Permissions
This video will look at what happens to a user access when share and NTFS permissions are used together. Check out http://itfreetraining.com for more of our always free training videos. Using these effectively together can greatly improve the security of your network while still allowing the user to access what they need to. Download the PDF Handout: http://ITFreeTraining.com/handouts/server/share-ntfs.pdf Share and NTFS Permissions When you create a file share, you are able to configure 3 basic permissions on the share. Full control gives the user’s read/write/delete, the ability to take ownership and change permissions. Change allows the user to read/write/delete, and read allows the user to read. NTFS has five basic permissions. Full control has the same effect as share full control and read has the same effect and the read share permission. The modify permission in NTFS is the same and the change permission in share permission. If you have configured different shares and NTFS permissions, the important point to remember is that that most restrictive permission will always win. Consider some examples. 1) If the share permission was set to read, and the NTFS set to full control, the user, when accessing the share, would get the permission read. 2) If the share had full control and the NTFS permissions were set to read, the user would once again only have read permission since the most restrictive permission will always win. 3) If the share permission was set to change and the NTFS permission was set to full control, the user would get modify access. Modify access is essentially the change permission. Since the change permission was the most restrictive permission, the user will have read/write/delete which is change or modify access. 4) If the share permission was set to full control and the NTFS permission was set to modify, the user would get modify access. Modify access is essentially the change permission. Since the change permission was the most restrictive permission, the user will have read/write/delete which is change or modify access. The choice of which permission to use comes down to the choice of the individual administrator. Some administrators configure the share permissions with full control and then subtract permissions using NTFS. Others will configure security at the share level. The important point to remember is that NTFS permission allows granular control while share permissions are a broad stroke approach. Demonstration DepData will be configured to allow full control at the share level. Permissions will be subtracted at the folder level using NTFS. 1) Right click the folder DepData and select properties. 2) Select the tab sharing and the press the button advanced sharing. 3) From the advanced sharing dialog press the button at the bottom permissions. 4) This will show that everyone has full control to the share. 5) Next select the security tab and notice what permissions have been configured. The users have been configured with modify access. This essentially means that a user accessing the share will lose full control access that was granted at the share level and be left with modify access. However, users like administrators that have been granted full control will be allow to have this access since at the share level it has been configured with full control. Depdata2 will be configured to share permission for user. 1) Right click the folder DepData2 and select properties. 2) Select the tab sharing and then press the button advanced sharing. 3) From the advanced sharing dialog press the button at the bottom permissions. 4) In this case, the everyone permission has been added with change access. Also notice the second entry for administrators gives administrators full control. In this example there are only two groups so this is not that difficult for the administrator to configure this. However, if there were more groups, this becomes more work to keep up to date. 5) Next select the security tab and notice what permissions have been configured. Notice that users and administrators have been configured with full control. However, the user will only get change access because this was what was configured at the folder level. You can see that if an administrator forgot to configure NTFS permissions, the user would not get any additional access as the share permission acts as a safety net to prevent the user getting more permissions then they should have. 6) Using this method, it is also possible to remove user access. For example, if you want the user to only have read access to a file or folder you would only need to modify the NTFS permission to remove the write access for that user. Description too long for YouTube. Please see following link for rest of the description: http://itfreetraining.com/server#share-ntfs
Views: 36644 itfreetraining
Client Access Licenses (CALs) in Windows Server 2012
Check out http://YouTube.com/ITFreeTraining or http://itfreetraining.com for more of our always free training videos. This video will look at the 3 different CALs that are available in Windows Server 2012. These are user, device and RDS. This video looks at how many you need in order to make sure your network is compliant and what these CALs allow you to do and not do. http://ITFreeTraining.com/handouts/server/cals.pdf What is a CAL? A CAL is a Client Access License which is required for a user or computer to use features on a Windows Server, like file shares or printing. Services like unauthenticated internet access do not require a CAL. If you however use a 3rd party system to authenticate users before they connect to the web server you would need to purchase a CAL. Types of CALs There are 3 basic CALs available for Windows Server 2012. There are other features CALs that are available for products like SQL Server, but these are not covered in this video. The CALs covered in this video are user, device and Remote Desktop. User: Required for a user to access a Windows Server. Device: Required for a device to access a Windows Server. Remote Desktop: Required for each user or device that uses Remote Desktop Services. Does not include remote desktop connection for administrator performing administration work on the server. Each server supports 2 remote desktop connection for administration only. User CAL A user CAL is associated with a user. Once the user has a CAL, it is associated with the user, and that user is free to access any Windows Server on the network using any device. If you have more users than devices on your network you should purchase user CALs. Device CALs Device CALs are associated with a devices like a computer or device like a tablet. Once a device CAL is associated with that device, any number of users can login to that device and access Windows Server. The users that use this device do not require a user CAL. Device CALs are a good choice when you have more users on your network than devices. Remote Desktop CALs This CAL is also referred to as an additive CAL as once you add the CAL to Windows Server it activates additional functionality. Unlike the other CALs, remote desktop CALs need to be activated before they can be used. User and Device CALs rely on the administrator to check that they have enough CALs on the network to cover the number of users and devices they have. Functionality on the Windows Server is not gained or lost if the Administrator does not have the correct number of user and device CALs. Remote Desktop CALs come in 3 different types. These are user, device and external connector. User: Like a standard User CAL, a remote desktop user CAL allows the one user to connect to the remote desktop server using any device. Device: A device CAL allows any device to connect up and use Remote Desktop Service. Any user is free to login to this device and use it. External Connector: This allows multiple users from a 3rd party to connect to a single Remote Desktop Server. New CALs support older OSs The CAL that you purchase can be used with any operating system before it. For example, if you are running Windows Server 2008 on your network and need additional CALs, you should purchase Windows Server 2012 CALs as these will work with Windows Server 2008 and will work when you upgrade your Servers to Windows Server 2012. Microsoft also allows CALs to be updated to newer operating systems as required. See http://YouTube.com/ITFreeTraining or http://itfreetraining.com for our always free training videos. This is only one video from the many free courses available on YouTube. References "Client Access Licenses and Management Licenses" http://www.microsoft.com/licensing/about-licensing/client-access-license.aspx "Newegg TV: Microsoft Windows Server 2012 CALs Interview" http://www.youtube.com/watch?v=9dYDeDNIUt0
Views: 181997 itfreetraining
MCITP 70-640: Group Policy Replication
Check out http://YouTube.com/ITFreeTraining or http://itfreetraining.com for more of our always free training videos. This video looks at how the two different parts of Group Policy Replication work. Understanding how these two systems work will help you understand how to troubleshoot Group Policy problems when they occur. Download the PDF handout for this video from http://ITFreeTraining.com/handouts/70-640/part3/gpreplication.pdf Group Policy Object A single Group Policy is made up of two parts. These are Group Policy Container (GPC) and Group Policy template (GPT). Since group Policy is made up of two parts this is why it is referred to as a Group Policy Object (GPO). The Group Policy Container is stored in the Active Directory database and thus replicated with Active Directory replication. The Group Policy Template is the file part of Group Policy and is stored in the SysVol folder. A SysVol folder is present on every Domain Controller. The SysVol folder is replicated using FRS or DFS-R. DFS-R is only available in Windows Server 2008 and above. It is possible for these two systems two become out of sync with each other for a brief previous of time while replication is occurring. Demonstration If you want to see the current versions status of a particular Group Policy Object, select the Group Policy in Group Policy management and select the details tab. On this tab is listed the User version and the computer version of both in Active Directory and the SysVol folder. Both the Active Directory and SysVol values should be the same value if replication is working correctly. On this tab is the unique ID for the Group Policy, this number is used to identify the Group Policy. If you browse the SysVol folder, for example \\ITFreeTraining.local\SysVol\ITFreeTraining.local\Polices, this contains all the files for Group Policy. The directories used to store the Group Policy is the same Unique ID that was listed on the detail tab in Group Policy Management console. Inside any of these directory is a file called GPT.INI. This file contains the version number for the Group Policy. The number is a 32bit value. If you entered the number into Windows Calculator, the first 16 bits the user version and the last 16bits is the computer version. To view the Group Policy Container in Active Directory Users and Computers and make sure advanced features is ticked under the view menu. The Group Policy Container can be found under System\Polices. The Group Policy is listed under folders by the Unique ID just like they were in the SysVol folder. If you want to see the version, open the properties for one of the folders, select the attribute editor and locate the VersionNumber attribute. See http://YouTube.com/ITFreeTraining or http://itfreetraining.com for our always free training videos. This is only one video from the many free courses available on YouTube. References "MCTS 70-640 Configuring Windows Server 2008 Active Directory Second Edition" pg 260-262 "Group Policy Collection" http://technet.microsoft.com/en-us/library/cc779838(v=ws.10).aspx "Understanding the GPO version number" http://blogs.technet.com/b/grouppolicy/archive/2007/12/14/understanding-the-gpo-version-number.aspx
Views: 29256 itfreetraining
Recursive and Iterative Queries
DNS has two query types called recursive and iterative. Check out http://itfreetraining.com for more of our always free training videos. This video looks at how these queries are used to resolve DNS requests and how you would configure them in your organization to get the results that you require. Download the PDF handout http://ITFreeTraining.com/handouts/dns/querry-types.pdf Recursive and Iterative Queries Recursive: This query is normally sent from a device on the network to a DNS server. This includes servers which also, when they require DNS names to be resolved, will send a recursive query to a DNS server. When a DNS server receives a recursive query, it will take responsibility to find an answer, even if this answer is, "there is no DNS name registered for that name". If the DNS server is configured to forward requests, it will simply forward the request to another DNS server to be resolved. If forwarding is not configured, the DNS server will contact other DNS servers. The first DNS server that will be contacted will be a root hints server assuming information is not available in the DNS server cache that may help resolve the request. This request will be an iterative query which is explained in more detail below. In this example, the root hints server will respond back with the IP Address of the .com servers. The DNS server will be able to send an iterative query to this server asking for the DNS server that can answer DNS requests for ITFreeTraining.com. Once the DNS server has the IP Address for one of these DNS servers, it can contact it and resolve the name ITFreeTraining.com Iterative: An Iterative query is a DNS request which states, "Give me the answer or give me any information that will help me find the answer". If the DNS server has no information that will assist, it will respond back stating that and will not attempt to contact other DNS servers to attempt to find out the answer. Root hints servers are configured to only respond to iterative queries. As the root hints servers are at the top of the DNS hierarchy, if these were to become overloaded with recursive queries, this would affect their ability to answer other DNS queries and thus this is why recursive queries are switched off on the root hints servers. Summary Recursion: Sent by clients on the network to DNS Servers. The DNS server that is configured to accept recursive queries, which is the default, will contact other DNS servers as required to find out the result. Iterative: Will respond back from its cache or zone files. It will not attempt to contact other DNS servers to find out the answer. If it knows another DNS server that may be able to assist with the name resolution it will return the IP Address of that DNS server. References "Domain Name System" http://en.wikipedia.org/wiki/Domain_Name_System "MCTS 70-640 Configuring Windows Server 2008 Active Directory Second edition" pg 455 "Installing and Configuring Windows Server 2012 Exam Ref 70-410" pg 230
Views: 58055 itfreetraining
Hyper-V Course Introduction
This free training course looks at Microsoft Hyper-V. Check out http://YouTube.com/ITFreeTraining or http://itfreetraining.com for more of our always free training videos. It is updated as the technology changes to ensure that it is always up to date. Hyper-V Course This course uses the ITFreeTraining modular training system. This allows videos to be added and removed as required. New videos can be added for new features, old videos updated and improved. The web site allows you to select videos for a particular Microsoft certificate like 70-410 or for a particular operating system. This ensures that the information you require is available to you quickly and easily. Access the rest of the course http://ITFreeTraining.com/hyperv Download the PDF handout http://ITFreeTraining.com/handouts/hyperv/intro.pdf What is Hyper-V Hyper-V is free virtualization software from Microsoft. It is shipped in all versions of Windows after Windows 8 and Windows Server 2012. It is available as an update on Windows Server 2008. It works by creating a hypervisor between the hardware and the operating system and virtual machine. In order for the operating system or virtual machine to access that hardware it must go through the hypervisor. This creates a standard method for accessing hardware. There is other virtualization software on the market. Basic ones can be downloaded and used for free. Management Software Virtual machine software also comes with commercial management software. This software provides additional features for virtual machines like the ability to move the virtual machine between different servers. Also features like backing up the virtual machines and managing the load of the virtual machines can be performed. This is how companies like Microsoft make money when they give their virtual machine software away for free. See http://YouTube.com/ITFreeTraining or http://itfreetraining.com for our always free training videos. This is only one video from the many free courses available on YouTube. References "Hyper-V" http://en.wikipedia.org/wiki/Hyper-V
Views: 23095 itfreetraining
Shadow Copies
In this video, we will look at Shadow Copies which in Windows is a service that provides the ability for Windows to back up open files and restore files to a certain degree. Check out http://YouTube.com/ITFreeTraining or http://itfreetraining.com for more of our always free training videos. Access the rest of the course: http://ITFreeTraining.com/server Download Handout: http://ITFreeTraining.com/handouts/server/shadow-copies.pdf Shadow Copies 0:12 – Shadow Copies was first introduced in Windows XP. It works by creating a snapshot of the drive. The main aim was to allow backup software like NT Backup to be able to backup open files. The initial release of Shadow Copies only allowed for a temporary snap shot for the purpose of backing up the files. Later versions of Windows allow files to be restored from the snapshot. However, Shadow Copies should not be considered a replacement for regular backups. This is because snapshot records can and will change. If a file has not changed, the file is not included in the snapshot. If the user were to later delete a file that were not in the Shadow Copy storage, the only way to recover the file is to restore the file from the regular backup. Snapshots also operate under space restrictions imposed by the amount allocated to them and the number of snapshots that have already been created. When a storage area is full, the oldest backup is deleted. We’re going to take a closer look now. Consider that you have a data drive. Once Shadow Copies is enabled, it will allocate a storage area. The administrator can exercise control over how large the storage area for Shadow Copies really is; there is however, a minimum size it must be and that is 300 megabytes. When a Shadow Copy runs, it will store recently changed files. Looking at files on the drive, let’s consider that some have had changes made to them. When the Shadow Copy service runs next, these files will be copied to the Shadow Copy data store. Now consider that another file has changed after the first Shadow Copy has run. Nothing will change in the Shadow Copy storage area until another Shadow Copy is run. The Shadow Copy service will then copy the changed file to the storage area. The process keeps repeating; each time files are changed and the next time the Shadow Copy service runs, the changed files are copied to the storage area. The storage area is quite efficient at storing changes made to the files, rather than the whole complete file itself. So if you were to keep changing the same files, all the time, the storage area will be able to hold a lot of changes. At some point, the storage area will become full. When this occurs, the oldest Shadow Copy in the area is deleted when the next Shadow Copy service runs. Furthermore, Shadow Copies will only store up to 64 changes to the file, after this limit has been reached, the oldest version will be deleted to make room for the new one. Shadow Copies vs Backups 2:43 – The next point we’ll discuss is that Shadow Copies are not replacements for regular backups. The administrator does not have control over which files are removed from the Shadow Copy storage. If the file you want is within the Shadow Copy storage area, that is excellent and you can restore the file, however if it has been removed, there is no way to restore it. If you want to make sure it is always available, you will need to store that file in some kind of backup solution. This concludes the video on Shadow Copies. See http://YouTube.com/ITFreeTraining or http://itfreetraining.com for our always free training videos. This is only one video from the many free courses available on YouTube. References “Installing and Configuring Windows Server 2012 R2 Exam Ref 70-410” pg 76 "Configuring New Offline Files Features for Windows 7 Computers Step-by-Step Guide " https://technet.microsoft.com/en-us/l... "Windows Vista I/O technologies" http://en.wikipedia.org/wiki/Windows_... "File Sharing and Offline Files Enhancements" https://technet.microsoft.com/en-us/l... "Enable the Always Offline Mode to Provide Faster Access to Files" https://technet.microsoft.com/en-au/l...
Views: 16079 itfreetraining
MCITP 70-640: Global Catalog Server
Check out http://YouTube.com/ITFreeTraining or http://itfreetraining.com for more of our always free training videos. Global Catalog Servers contain a partial replica for every object in Active Directory. A Global Catalog Server is used to find objects in any domain in the forest. Any Domain Controller can be made into a Global Catalog Server. This video looks at how to remove or make a Domain Controller into a Global Catalog Server and also the reasons why and where you should put Global Catalog Servers. Global Catalog Servers are used to find objects in any domain in the forest but it should be remembered that this does not give the user access to that object. Unless the user has the correct permissions they will not be able to access resources in other domains. Global Catalog Servers also contain information about groups that span across domains and services that work at the forest level. How to change a Domain Controller to a Global Catalog Server 04:18 Using the admin tool Active Directory Users and Computers to navigate to the computer account for your Domain Controller. By default this will be located in the Domain Controllers OU. Open the properties for the Domain Controller and select the button NTDS settings. Deselect or select the tickbox Global Catalog. Windows will do the rest. Reasons to deploy Global Catalog Servers Reason 1 Domain Controllers generate a security token for a user when they first login. If the user is in a group that spans multi--domains, that Domain Controller will need to contact a Global Catalog to get information about that group. Reason 2 If a user logs in using a Universal Principal Name (UPN), that is, they log in using a user name in the form of [email protected], a Domain Controller will need to access a Global Catalog Server before the log in is completed. Reason 3 Global Catalog Servers work as an index to the forest. If you perform any searches on the forest you will need to contact a Global Catalog Server. Reason 4 Microsoft recommends that any network that is separated by a Wide Area Network have a Global Catalog Server deployed at that location. This will ensure that users can log on if the Wide Area Network is down. In order for a computer to contact a Global Catalog Server, ports 389 (LDAP) and 3267 (Global Catalog) need to be opened. If these ports are not open then the user will not be able to use the remote Global Catalog Server. Reason 5 Some software requires a Global Catalog Server in order to run. Exchange is a big user of the Global Catalog Server. If you have a decent amount of Exchange users on your network, you should consider deploying a Global Catalog Server close to these users. Reasons not to deploy a Global Catalog Server Global Catalog Servers put more load on the server in the form of searches and lookups from the client. Global Catalogs need to keep their index up to date. This requires more network bandwidth. In order to store the Global Catalog Server, you are required to have additional hard disk space on your server.
Views: 159908 itfreetraining
DNS Records
In order to find resources on the network, computers need a system to look up the location of resources. Check out http://YouTube.com/ITFreeTraining or http://itfreetraining.com for more of our always free training videos. This video looks at the DNS records that contain information about resources and services on the network. The client can request these records from a DNS server in order to locate resources like web sites, Active Directory Domains and Mail Servers just to name a few. http://ITFreeTraining.com/handouts/dn... In this video This video will look at the following DNS records: Host (A and AAAA): Contains IP Addresses for IPv4 and IPv6 hosts Alias (CNAME): Works just like a shortcut for files except for DNS records. Mail Exchange (MX): Holds the address of mail servers for that domain. Service Record (SRV): Holds the address of services on the network. E.g. Active Directory DC's. Start of Authority (SOA): Contains information and configuration for a zone file. Name Server (NS): Contain the address of other DNS servers for that zone. Pointer (PTR): Reverse look up record allowing a hostname for an IP Address to be look up. Host (A and AAAA) The host record is used to store the address of a hostname. "A" is used for IPv4 and AAAA (Quad A) for IPv6. These can be created manually in DNS or if dynamic DNS is enabled and the client can register its hostname and thus its IP Address with the DNS server. Alias (CName) A canonical name or CName record provides an alias service in DNS. A CName effectively points to another A or Quad A record. When the client requests the hostname that is contained in the CName, they are given the IP Address that is contained in the A record or Quad A record. The advantage of a CName is that it can provide a simple name to the user rather than a more complex server name. For example, instead of having to remember FS27 for the local file server, a CName of FS could be used to point towards the server FS27. CName's can also be used to transparently redirect network traffic. For example, if you changed you mind and wanted to redirect the user to FS28 you would only need to change the CName record to point to FS28 rather than FS27. It should be remembered that the old record may exist in the client cache and may take some time to expire. Mail Exchange (MX) The mail exchange record contains a mail server that is able to process mail for that domain name. When a mail server wants to deliver mail, it will perform a DNS lookup asking the DNS server for an MX record for that DNS Domain name. The mail server will then attempt to deliver mail to that server. The mail server does not need to have the same DNS name as the mail that is being delivered, it simply needs to understand how to process mail for that DNS domain name. The MX record also has priority value that can be configured. If two or more MX Exchange records exist for the same DNS Doman name, the MX record with the lowest priority will be tried first. If this fails, the MX record with the next lowest value will be tried until the mail is delivered. Often large companies will have multiple mail severs for incoming mail. In some cases, these additional mail servers may be located on different sides of the globe in case there is a long network outage. Service Record (SRV) Service records allow clients on the network to find resources on the network. Active Directory creates a number of service records in DNS to allow clients to find resources like Domain Controllers. This is why Active Directory cannot operate without DNS. A single service record has a number of data fields associated with it. These include, service, target, port and priority. Service records are normally created automatically by applications assuming that your DNS server allows dynamic updates. Start of Authority (SOA) There is one start of authority record (SOA) for each zone. Even though the SOA is technically a DNS record, essentially modification of the SOA record is performed through the properties of the DNS zone. Looking at the data in the SOA record, you can configure options for the zone like the primary name server for that zone (DNS servers that hold the master records for the zone), the e-mail address of an administrator, serial number (Incremented each time a change is made in the DNS zone) and the refresh time for the zone (How often a secondary zone should query a master for changes). Video description to long for YouTube. For full description please see http://itfreetraining.com/70-642/dns-... See http://YouTube.com/ITFreeTraining or http://itfreetraining.com for our always free training videos. This is only one video from the many free courses available on YouTube. References "MCTS 70-640 Configuring Windows Server 2008 Active Directory Second edition" pg 458 -- 459 "Installing and Configuring Windows Server 2012 Exam Ref 70-410" pg 236-237 "SRV record" http://en.wikipedia.org/wiki/SRV_record
Views: 177778 itfreetraining
IPv6 Transition Technology
IPv6 transition technology allows your IPv6 networks to work with IPv4 or help you to convert your IPv4 networks to IPv6. Check out http://YouTube.com/ITFreeTraining or http://itfreetraining.com for more of our always free training videos.
Views: 28863 itfreetraining
MCITP 70-640: Moving Operation Master Roles
Check out http://itfreetraining.com or http://youtube.com/ITFreeTraining for more of our always free training videos. Active Directory has 5 operations master roles. These roles can be moved from Domain Controller to Domain Controller. Two are at the forest level and three are at the domain level. This video looks at how to move these operations roles from one Domain Controller to another. How To Points The 3 operations roles at the domain level are PDC Emulator, RID Master and Infrastructure Master. These can be transferred using active users and computers by right clicking the domain and selecting operations master. The 2 forest wide operations roles are Schema Master and Domain Naming Master. To install the Schema Master, run Regsvr32 schmmgmt.dll. Then access it by using the mmc to add the schema snap in. To move the Domain Naming Master role, run Active Directory domains and trusts and right click Active Directory domains and trusts.
Views: 80512 itfreetraining
NTFS Explicit and Inherited Permissions
Check out http://YouTube.com/ITFreeTraining or http://itfreetraining.com for more of our always free training videos. NTFS allows permissions to be either configured on each file or folder or inherited from a parent folder. This video will look at both ways of configuring permissions and how the administrator can use them effectively to achieve the result that they require. Download the PDF Handout: http://ITFreeTraining.com/handouts/server/ntfs-explicit-inherited.pdf Explicit and inherited Explicit permissions are created when the object is first created. For example, if a hard disk is first formatted, permissions must be assigned to the root folder in order for the user to access data on the drive. Otherwise, explicit permissions can be created on an object manually at any time. Inherited permissions are permissions that are inherited from the parent. The advantage of this is that if the permissions assigned to the parent change, the object or objects inheriting the permissions will also change. Explicit and inherited Example When a hard disk is first formatted, explicit permissions will be assigned to the root folder. It is not possible to use inherited permissions because there is no folder above the root folder in which permissions can be inherited from. In this example, everyone has been given read & execute permission to the root folder. Also the administrators have been given full control. When the folder c:\Users is created, it will inherit the permissions from the folder above it which is c:\. So essentially the folder c:\users has the same permissions as the root folder. When the sub folder Joe is created, the explicit permission modify for the user Joe is added. This gives the user Joe the ability to read, write and delete files and folders in the folder c:\Users\Joe. If Joe were to create a sub folder called c:\Users\Joe\Docs this folder would inherit the permissions from the folder above and thus Joe would have the ability to read, write and delete files and folders in that sub folder. 1) To create a folder structure like the one in the example, open Windows Explorer, open a drive, in this case D, right click on the white space and select folder under the new menu. 2) When the folder is created it should be selected allowing the name of the folder to be changed to Users. 3) Open the folder and right click on the white space. Select the option Folder under new and rename the folder to Joe. 4) In order for Joe to read, write and delete to files and folders in this folder, he needs to be given additional access. To change the security of the folder, right click the folder and select the option properties. 5) From properties select the tab security and then press the edit button. 6) Press the add button and then enter in the username of Joe. Once Joe has been added, tick the option for modify. 7) Open the folder Joe and then create a folder called Docs. 8) Right click on the Docs folder, select properties and then select the security tab. This should show that the permissions have been inherited from the parent folder. Inherited permissions appear as gray ticks and explicit permissions have black ticks. 9) There are some cases you may need inherited permissions that need to be changed. To do this, open the properties of the file or folder, select the security tab and press the advanced button. On the advanced settings screen press the button at the bottom of the screen “Disable inheritance”. A dialog will be presented asking if you want to convert the existing permissions or remove all permission from the object. If you convert the permissions, this essentially copies the permissions being applied. If you remove the permission, all permissions will be removed and you will need to configure them from scratch. 10) To remove a permissions, press the edit button. Select the permission that you want to remove and then press the remove button. See http://YouTube.com/ITFreeTraining or http://itfreetraining.com for our always free training videos. This is only one video from the many free courses available on YouTube. References “Windows 101: Know the basics about NTFS permissions” http://www.techrepublic.com/article/windows-101-know-the-basics-about-ntfs-permissions/
Views: 25369 itfreetraining
MCITP 70-640: Active Directory Accounts
Check out http://YouTube.com/ITFreeTraining or http://itfreetraining.com for more of our always free training videos. Active Directory accounts are required for security for users and computers. An account contains a Security Identifier or SID to uniquely identify the account. The account also contains a password and the attributes associated with that account. This video looks at how accounts work and how they are used with security. Security Identifier (SID) A SID is used in security to identify a user or computer account. Short SID's like S-1-1-0 are used in local accounts. Regardless of which computer it is used on, whether in a domain or not, a short SID like this always represents the same thing. For example, S-1-1-0 will always mean everyone on any Windows system. Longer SID's like S-1-5-21-1218951425-845968048-208583963-2209 are used in a domain. Since a SID provides a unique way of representing a user, attributes of the user can change. For example, the user's first and last names are free to change at any time and do not affect which objects the SID has been used on. Account Management When you change the attributes of a user like their name, since the account is associated with the SID rather than their name, changing these attributes will not affect security or other systems. Some changes may be noticeable; for example, the folder the user profile is stored in will be stored under their old user name after the username is changed. If a person leaves the company, it is a common practice for the account to be disabled rather than deleted. Disabling the account preserves the SID, the security applied to that user, and any certificates associated with that user. When the user's replacement is hired, the account can simply be enabled and renamed to the new user. User Authentication Process When a user logs on to a network, an access token is generated for that user. Inside the access token is the user's SID. When this access token is presented to another system, the other system can read the user's SID from the access token. If the user is a member of any group, the SID for that group will also be placed inside the access token. Another system can look at this access token and also determine the group membership for that user. Any changes made to group membership for a user will require a new token to be created. For this to occur, the user must log off and log back on again to create a new token. User Naming Standards Before you start creating accounts in Active Directory, your company should come up with a standard for these accounts. For user accounts, you could use first initial dot last name. Whichever standard you come up with, it should be designed to reduce the number of people that will have the same username. For example, John Doe and Jane Doe will both have the username J.Doe using the standard first initial dot last name. Since Active Directory does not support two or more users having the same usernames, one of the usernames will need to change. A lot of administrators will add a number to the end of the username to ensure that it is unique in the organization. User Log On Standards Active Directory supports two Log On Standards for accessing the Domain. The first dates back to Windows NT and is the form of domain \ username. The second is just like an e-mail address in the form [email protected] Pre Windows 2000 Logon Name When creating a new account in Active Directory, a pre-Windows 2000 logon name will be configured that will match the username where possible. You are free to change the pre-Windows 2000 logon name but in most cases, it is best to keep it the same as the username. The pre-Windows 2000 logon name is limited to 20 characters. Very old clients like Windows NT will only use the pre-Windows 2000 logon name. Modern non-Microsoft systems should not need the pre-Windows 2000 logon, but if you are using a very old system it may require it. References "What Are Security Identifiers?" http://technet.microsoft.com/en-us/library/cc786606(WS.10).aspx "Security Identifier" http://en.wikipedia.org/wiki/Security_Identifier "Users Can Log On Using User Name or User Principal Name" http://support.microsoft.com/kb/243280 "SAM-Account-Name attribute" http://msdn.microsoft.com/en-us/library/ms679635.aspx "Active Directory Maximum Limits -- Scalability" http://technet.microsoft.com/en-us/library/cc756101.aspx
Views: 65647 itfreetraining
What is DNS
This course goes through DNS or Domain Name System. This video provides an introduction to DNS, however the videos in this course are dynamic in nature. As DNS changes, videos are added or removed as required to make sure that you always have the most up to date information. For all the DNS videos see the following link. http://itfreetraining.com/dns Download the PDF handout http://ITFreeTraining.com/handouts/dns/what-is-dns.pdf What Is DNS DNS is a system that primarily maps a name to an IP Address. Although it can be used to do the reverse, it is primarily given a name and asked what the IP Address is for that name. This is the same principle that is used for a phone book. Given a name, a person is able to look up the phone number for that person using the phone book. Hosts File Before DNS, a hosts file was created on the local computer that contained a list of computer names and their IP Addresses. The problem with this approach is that all computers needed to have a copy of the same hosts file. With a few computers this was not too difficult, however as networks got bigger so did the hosts file, making it harder to keep up to date due to the size of the hosts file and the number of computers that the hosts file had to be copied to. Nowadays, DNS is the preferred way to look up computers on the internet, however the hosts file is still present on modern computers. Whenever possible you should use DNS rather than the hosts file however in some rare situations it may be necessary to use the hosts file. DNS (Domain Name System) DNS was first developed in 1983 to address the shortfalls of the hosts file. It is a distributed database based on a hierarchy design. This hierarchy design means that it is possible to have two computers on the internet with the same name. For example ws1.example.com and ws1.ITFreeTraining.com. The computers have the same hostname as ws1, however after this it is different. The full DNS address like ws1.example.com is referred to as the fully qualified domain name. Since the fully qualified domain name is different, it allows two computers to exist on the same network that have the same host name. DNS Namespace DNS Namespace can be divided up in to different parts. Each part can be stored on different DNS servers, which makes DNS a distributed system. This allows control of DNS to be divided up and distributed across the world. A DNS server does not need to hold all the data for a fully qualified domain. For example a DNS server may only hold data for the .com, .edu, .au etc part of the domain space. Other DNS servers may hold additional parts of the fully qualified Domain Name, for example Microsoft, ITFreeTraining, and Amazon. By these DNS servers working together, a fully qualified domain name can be resolved. This will be covered in more detail in later videos as well as other features of DNS. For the rest of the DNS videos please visit http://ITFreeTraining.com/dns See http://YouTube.com/ITFreeTraining or http://itfreetraining.com for our always free training videos. This is only one video from the many free courses available on YouTube. References None
Views: 119910 itfreetraining
Introduction to File Sharing using SMB and NFS
This video will look at the two file sharing protocols SMB and NFS. SMB is the primary file sharing protocol developed for Windows computers and NFS is the primary file sharing protocol that was developed for UNIX based systems. Access the rest of the course http://ITFreeTraining.com/server Download the Handout http://ITFreeTraining.com/handouts/server/smb-nfs.pdf SMB (Server Message Block) 0:16 – Server Message Block or SMB was originally designed by IBM back in the 80’s. After its inception, Microsoft took the protocol and added some features to it. The additions included features such as LAN Manager. Services such as this allowed Windows systems to map shared drives and have this new share act as a local drive on the computer. For simplicity’s sake, I will skip the 3rd and 4th point but we will get back to those in a minute. With the release of Windows Vista, Microsoft also released SMB 2.0. This was a major revision of SMB which, besides adding additional features, reduced the “chattiness” of the protocol. In other words, it reduced the bandwidth used or data amount transmitted, over the network. SMB 3.0 was released with Windows 8 and Server 2008 R2. With more improvements and added functionality, SMB 3.0 was aimed towards increasing effectiveness in Datacenters. When mapping a share, Windows will automatically perform the negotiation and sort out what version of SMB to use. Now what were the points that we skipped? In the late 90’s Microsoft had attempted to rename SMB to CIFS or Common Internet File System. Unfortunately for Microsoft, this attempt was unsuccessful so they were skipped in order to avoid confusion. CIFS had additional features, but the name simply did not catch on and Microsoft simply went back to SMB in future versions. Due to this, CIFS is referred to as a dialect of SMB though you may hear CIFS and SMB used synonymously, but they are basically referring to Windows file sharing. Moving forward however, the term CIFS should really not be used as it is a relic of the past and it should only be considered SMB. NFS (Network File System) 2:04 – The next file system we will be examining is Network File System, or NFS. Originally developed by Sun in the late 80’s, NFS version 1 was used internally within Sun Microsystems and never released publically. It was Version 2 that was released to the public however. This provided basic file sharing capabilities and was used extensively within Unix based systems. As they released Version 3 in 1995, it was enhanced to add 64bit support and was able to handle files larger than 2 gigabytes. In 2000, Sun released version 4 of NFS with added performance along with security improvements. This allowed for security methods to be applied and utilized to authenticate users, e.g. Kerberos. These security measures made NFS version 4 much more secure when compared to previous revisions. In The Real World 2:56 - Now I want to ask you a question. In the real world, which protocol would you use? Windows shares support both SMB and NFS, or even both at the same time. It is merely a matter of configuring which one you need or configuring both if you need to utilize both. Ideally, you’ll want to use a native protocol when possible. For example, if you are connecting two Unix systems, it will be best to utilize NFS. If you are connecting two Windows systems, SMB would be the obvious choice. Even though both achieve the goal of file sharing, there are differences in the way Windows and Unix based systems handle file systems and the users that will be using the systems. Mixing the two can lead to compatibility problems. As NFS is good for host authentication, it makes connecting two servers together rather easy. This can be placed in the boot up configuration and the data would be available to the operating system without the need for a user to be logged in. You could even connect to another server based on the IP address alone. Conversely, Windows requires user authentication in order to connect to an SMB share and generally the user is required to be logged in. It is possible to circumvent this and you would do this for some services running on the local system, but it is, unfortunately, not as simple as NFS makes it. Windows is an excellent choice for using authentication. Until NFS version 4, this was something that NFS did not handle well and was prone to more security problems. If you are using a domain, then Windows handles user authentication very well. Ultimately, the decision will be made on what operating systems you are using and your software requirements. In future videos, we will discuss how Windows file sharing (SMB) works and also how to incorporate NFS using Windows Server. Unfortunately our description it too long for YouTube, please check out http://www.itfreetraining.com/server/#/smb-nfs for the full description, references and more!
Views: 47971 itfreetraining
Claims explained
This video from ITFreeTraining will look at claims that are used with Federation Services. Check out http://itfreetraining.com for more of our always free training videos. By the end of the video you will understand what are claims and what protocols are used with claims. Download the PDF handout http://ITFreeTraining.com/handouts/federation/claims.pdf Claims A claim essentially is a statement made by one party about another party. This is provided by an Identity Provider. Services like Facebook are able to create a claim about a user which holds some information about the user. For example, the user can then use their Facebook login to access other sites. Let's consider an example of a shopping center that allows free parking for those people that have travelled a long distance to shop there. In order to get their free parking, all they need to do is show their driver's license which has their address on it. The identity provider in this case would be the institution that issues driver's licenses. The user would be the person wanting free parking. The service would be the shopping center who has made the decision to allow free parking for people outside the area. Security Token Claims are generally packaged inside a security token. This allows the details of the claim to be checked to ensure they have not been changed. When working with Federation Services you may hear the term security token and claim used interchangeable. Essentially they are referring to the claim which may be packaged in a security token. Fictional Example In this example, a person is given a voucher to a cinema in order to obtain a movie ticket. The movie ticket can then be used to enter a cinema to see a movie. Federation Services often work in a simple way. Token Example In some cases you will hear wording to the effect that a server consumes claims. When Federation Services are setup like this, the following generally happens. The Federation Server will issue a claim to the user. The user will then give this claim to another Federation Server. Once this Federation Server is able to verify that claim is valid, the Federation Server will destroy the claim and create a new claim. The new claim is free to change the information in the old claim and add to it. For example, it may add which servers the user is allowed to access. This kind of information is subject to change and thus the original server creating this claim does not know this information when the first claim is created. Protocols There are a lot of different protocols that make Federation Services work. Federation Services is also very customizable so even though there are some key protocols to make the system work, depending on how it is configured will determine which protocols will be used. For example, there are a number of different protocols that can be used to create a security token. WS-Trust In order for Federation Services to exchange information between different Federation Services there needs to be a common protocol between the systems. The WS-Trust protocol is designed to allow the Federation Services to communicate with each other and exchange information like security tokens. There are a number of different versions of the protocol so it is a matter of making sure that both sides are using the same protocol. SAML (Security Assertion Markup Language) SAML is one of the protocols that can be used to create security tokens. It is an open standard for authentication but can be used to create tokens. Once the token is created, it is transported to the other server using WS-Trust. It is possible to use other protocols however this one is the most common. What the server will accept and not accept is referred to as an endpoint. Description to long for YouTube. Please see the following link for the rest of the description. http://itfreetraining.com/federation#claims See http://YouTube.com/ITFreeTraining or http://itfreetraining.com for our always free training videos. This is only one video from the many free courses available on YouTube. References "Web Services Description Language" http://en.wikipedia.org/wiki/Web_Services_Description_Language "WS-Trust and WS-Federation" "WS-Trust" http://en.wikipedia.org/wiki/WS-Trust
Views: 20097 itfreetraining
MCITP 70-640: Windows Auditing
Windows has a comprehensive auditing feature allowing you to track files and object access. In this video and the next 2 videos, auditing is looked at for Active Directory and file and folders access. Download the PDF handout for this video from http://ITFreeTraining.com/handouts/70-640/part3/windowsauditing.pdf Coming Up This video: Auditing concepts Next video: Active Directory Auditing Video after this: File and Folder Auditing ACL's and Auditing An Access Control List or ACL defines the permissions of an object in Windows. The ACL is divided into two parts. These are the Direct Access Control List (DACL) and System Access Control List (SACL). The DACL is used for permissions like read and write. The SACL is used for auditing permissions like success and failure. Since two systems are used for permissions and auditing, this requires two sets of ACLS. This means that an object can be audited by the auditing system even though there may not be any read permissions defined for that object. Audit Example The SACL on an object will determine if this object is audited. However, if the results are recorded in the event viewer, this will be determined by the audit policy. If the audit policy is configured to record events of that audit type, these events will be recorded in the event viewer. Thus, in order for auditing to work, the SACL must be configured to audit events for that object and also the Audit Policy must be configured to allow auditing to occur. By having a system like this, it allows an administrator to quickly change what is audited without having to change the permissions of objects. As auditing puts more load on the system, many administrators will only use auditing when required. See http://YouTube.com/ITFreeTraining or http://itfreetraining.com for our always free training videos. This is only one video from the many free courses available on YouTube. References "MCTS 70-640 Configuring Windows Server 2008 Active Directory Second edition" pg 367 - 375 "Access Control Lists (Windows)" http://msdn.microsoft.com/en-us/library/windows/desktop/aa374872(v=vs.85).aspx "AD DS Auditing Step-by-Step Guide" http://technet.microsoft.com/en-us/library/cc731607(WS.10).aspx
Views: 19745 itfreetraining
Configuring Root Hints on Windows
Check out http://YouTube.com/ITFreeTraining or http://itfreetraining.com for more of our always free training videos. The DNS root hints servers are at the top of the resolving process for DNS names. In order for a DNS server to resolve a DNS name without the help of other DNS servers, e.g. forwarding the request to another DNS server, a root hint server needs to be contacted. There are a lot of root hints servers located around the globe for this task. This video looks at how to configure the root hints servers for DNS in Windows Server. PDF handout http://ITFreeTraining.com/handouts/dns/hints-demo.pdf Demonstration This demonstration uses "Remote Server Administration Tools" (RSAT) for Windows 8. You can perform the same steps using Windows servers by running the DNS management tools from there. 1) In order to open DNS Manager, open charms by moving the mouse to the top right and select search. In the search dialog enter in "dnsmgmt.msc". 2) When DNS Manager loads up, if a DNS server has not already been added to DNS Manager it will prompt you to add one. If you want to add an additional DNS server to DNS manager and thus manage multiple DNS servers at the same time, this can be done by right clicking DNS at the top and selecting the option connect to DNS server. 3) To configure the root hints on a DNS server, Right click the name of the DNS server in DNS manager and select the option properties. 4) In the properties of the DNS server, on the forwarders tab there is a tick box called "Use root hints if no forwarders are available". This option will be grayed out if no forwarders have been configured. If the forwarders cannot be contacted the DNS server will attempt to contact a root hint server. If your DNS server is behind a firewall and should not be connecting to the internet directly, then this option should be cleared. Remember this option forms a backup method if the forwarders are down and thus un-ticking the option will prevent DNS names from being resolved in this situation. You should only untick this option if you don't want the DNS server contacting the internet directly and you have reliable DNS forwarders and are prepared to accept that if the DNS forwarders are down then no DNS resolving will be possible. 5) On the advanced tab, there is an option called "Disable recursion (also disables forwarders)". If you tick this option the server will not use forwarders or root hints. If your DNS servers do not require one of these you should tick this option. Ticking this option helps secure the server from a potential denial of service attack. 6) On the root hints tab, this will show all the root hint servers that are currently configured. By default there will always be entries in here. The information shown here is found in "c:\Windows\System32\dns\CACHE.txt". 7) If you want to update the root hints from another server you can press the button copy from server. The defaults should work fine and you should not do this. Doing this can give your DNS server access to other DNS root hints servers which have recently been added to the internet. You need to then enter in a DNS server to copy it from. You can use any DNS server that you wish. Your ISP DNS server is a good choice or a public DNS server like google's which are and References "Root name server" http://en.wikipedia.org/wiki/Root_name_server
Views: 20750 itfreetraining
The NSLookup tool is a great tool for troubleshooting DNS problems. Check out http://YouTube.com/ITFreeTraining or http://itfreetraining.com for more of our always free training videos. This video looks at how to use NSLookup in Windows, however it also available in Linux. NSLookup allows you to control which DNS servers you contact and which DNS records are resolved giving you a real world picture of what is happening with DNS on your network. Download the PDF handout http://ITFreeTraining.com/handouts/dns/nslookup.pdf Demonstration 1. To open NSLookup, open a command prompt from the start menu. 2. To look at the name server records for a particular website, enter in NSLookup followed by the web address. For example, NSLookup google.com 3. If when running the command you have the line "Non-authoritative answer:" in the response, this means the result has been obtained from a DNS server that has either cached the results or has an unauthoritative copy rather than from a DNS server that is consider an authoritative DNS server. NSLookup Non-authoritative answer When querying a DNS server, a DNS server will first attempt to resolve the request from its cache. If it is not able to do this it will attempt to resolve the query itself. If the DNS server is configured for forwarding, the query will be forwarded to another DNS server, for example the ISP's DNS server and that DNS server will then answer the query from its cache or attempt to resolve it itself. In any DNS zone, there will be DNS records that state which DNS servers are considered to hold authoritative DNS records for that DNS zone. These can be primary or secondary zones. The point to remember is the administrator for that DNS zone has made a decision that these DNS servers should be considered authoritative or contain up-to-date DNS records. For example, a company, if they had permission to do so, could create a secondary zone from another DNS zone. However, it would be up to the company to make sure this secondary zone was keep up to date. If the company was a 3rd party company there is no guarantee that this would occur. For this reason, an administrator should not make a DNS server like this an authoritative DNS server. When an NSLookup returns a DNS record, it will indicate if this is a non- authoritative result with the text "Non-authoritative answer". The important point to remember is that even when forwarding is used you can still get an authoritative answer if the DNS server had to contact an authoritative DNS server in order to obtain an answer. The results shown for NSLookup are based on where the result came from, not which DNS servers were used in the process. Demonstration NSLookup Interactive If you run NSLookup without any parameters, this will launch NSLookup into interactive mode. The mode allows you to run multi commands one after the other. 1. If you enter in a domain name by itself, this will show all the name server records for ITFreeTraining. This is essentially a list of DNS servers that are considered to hold authoritative data for that DNS zone. 2. To list the DNS records for a DNS name, run the command "ls" followed by the DNS name. For example, ls ITFreeTraining.local 3. Most DNS servers will be configured to not allow a list of the DNS records held on that DNS server to be displayed. When you attempt to query the DNS records, you may get an answer back saying query refused. 4. On Microsoft DNS Server, to configure the DNS server to allow DNS records to be listed, run DNS Manager from Administrative Tools or under Tools in Server Manager. In order to configure the zone transfer properties, right click on the zone and select properties. 5. To allow DNS records to be listed using ls in NSLookup, zone transfers needs to be enabled on the computer that is asking for that information. This is done on the "Zone Transfers" tab. Once the tick box "Allow zone transfers" is ticked, the administrator is able to select which DNS server zone transfers will be allow or they can choose the option "To any server". If they select the option, "Only to servers listed on the Name Servers tab" this will only allow zone transfers to servers that are list on the tab "Name Servers". 6. The ls command also supports a number of switches. The --a switch will show only canonical names or aliases. The --d switch will list all DNS records. The "--t TYPE" will allow you to specify the type of DNS record that you want to list. Valid types are A, CNAME, MX, NS and PTR. Description to long for YouTube. Please see the following link for the rest of the description. http://itfreetraining.com/dns#nslookup See http://YouTube.com/ITFreeTraining or http://itfreetraining.com for our always free training videos. This is only one video from the many free courses available on YouTube. References "Using NSlookup.exe" http://support.microsoft.com/kb/200525
Views: 46064 itfreetraining
DNS Zones
Check out http://YouTube.com/ITFreeTraining or http://itfreetraining.com for more of our always free training videos. This video will look at the DNS zones that are available in DNS. Once you complete watching this video you will understand zones, what zones files are available, and how you can use the different zones. Download Handout http://itfreetraining.com/handouts/dns/dnszones.pdf What is a DNS zone? A zone file contains the data for a portion of the DNS Name space. For this reason, zones allow different administrators to have control over that part of the DNS name space. Depending on what type of zone file that you create, this will determine what types of DNS records can be stored in that zone and if the data in that zone can be modified. In this video This video will look at the following zone types: Primary zone, Secondary zone, Active Directory integrated zone, Stub zone and reverse look up zone. Depending on what the needs of the administrator are, this will determine which zone file is used. Different zone files are used in different scenarios and the administrator needs to decide the correct zone file to use for that scenario. Primary zone For any domain name, there needs to be at least one primary zone. If the primary zone is stored in a text file, rather than a database like Active Directory, then this means that the server holding the primary zone text file is the only location where changes can be made to the zone data. If another zone file is asked to make changes to the zone, these changes will be forwarded to a DNS server that is holding a primary zone. This does mean that if the DNS server holding the primary server is not available, changes cannot be made. Active Directory Integrated Zone An Active Directory Integrated Zone is essentially a primary zone that has been moved from a text file stored on the computer into the Active Directory database. The advantage of this is that any Domain Controller that has the DNS role installed on it can access the Active Directory Integrated zone. Changes can also be made on any Domain Controller running DNS unlike text based primary zones which are limited to one server. Having the data stored in Active Directory means that the zone will use the same replication system that is used to replicate objects in Active Directory which is quite efficient. Active Directory Integrated Zones also allow the clients to use secure updates. Secure updates use the secure channel created when a computer is added to the domain and thus the computer must be a domain member. If you use a primary zone stored in a text file, and if you enable dynamic updates, you are also allowing none secure updates as well. Secondary Zones A secondary zone file is a copy of another zone that is read only. The copy can be any other zone stored on any other DNS server. For example, the zone file could be stored on Windows or a UNIX based system and copied from a primary or secondary zone. If you copy the data from a secondary zone, this would essentially be a copy of a copy so you may have delays waiting for the zone data to be copied from one server to the next server. Since the zone file is read only, changes cannot be made so these changes are passed onto a server holding a primary zone. Stub Zone A Stub Zone contains only the NS (Name Server) records from a zone. This NS records contain DNS servers that are considered to be authoritative for that zone. In other words, the DNS Servers are considered to be able to give the best answers for that zone. Since stub zones update the NS records, if there are changes to the NS records, these changes will updated automatically. If you use forwarding or conditional forwarding, and if changes are made, the DNS server would not be aware of these changes. The rest of the description is available at http://itfreetraining.com/dns/dns-zones References "MCTS 70-640 Configuring Windows Server 2008 Active Directory Second edition" pg 455-456 "Reverse lookup" http://technet.microsoft.com/en-us/library/cc784493(v=ws.10).aspx "Reverse DNS lookup" http://en.wikipedia.org/wiki/Reverse_DNS_lookup
Views: 91193 itfreetraining
MCITP 70-640: Group Policy Filtering
Check out http://YouTube.com/ITFreeTraining or http://itfreetraining.com for more of our always free training videos. There are a number of different options in Group Policy that allows you to target Group Policy to particular users and computers. This video looks at WMI filters and security that can be applied to target Group Policy settings that you configure. The video also looks at how you can disable parts of Group Policy to speed up the processing on your clients. Sorting by OU's One way of applying Group Policy is to sort the users and computers into different OU's. A typical way of doing this is to separate the users and computers into physical locations, departments and operating systems. The problem with this approach is that an administrator needs to sort these objects initially and when change occur. For example, if users change job titles and operating systems are upgraded. By using filters in Group Policy you can automate this process. Demonstration All the Group Policy filtering options are available from Group Policy Management Console. Once you select a Group Policy Object you can configure additional filtering options for it. User/Computer Configuring Enabling/Disabling If you select the details tab, the option GPO status allows you to enable or disable the GPO as well as only have the user or computer configuration enabled. If you are only using one part of the configuration for the GPO, it is worth while disabling the other configuration. Disabling configuration like this will speed up the processing of the GPO on the client. Security Filtering On the scope tab you can configure particular groups to be allowed the ability to apply the Group Policy object. Adding groups here effectively changes the permissions of the Group Policy Object giving that group access to apply the Group Policy. The same effect can be achieved by editing the security of the Group Policy Object directly, however Security Filtering does provide an easier interface if all you want to do is see who has the ability to apply the Group Policy or add or remove access. WMI Filter Windows Management Instrumentation (WMI) allows software to retrieve information about the client. For example, information about the operating system, hardware and software installed can be retrieved using WMI. Using WMI filters, you can target a Group Policy Object to particular characteristics of a computer. You can only assign one WMI filter per Group Policy Object, however you can make it as complex as you wish. Using WMI filters in your domain especially complex WMI filters this can slow down the time Group Policy takes to apply. To create a WMI query, Select WMI Filters in the left panel of Group Policy Management under your domain and paste in your WMI query. An example of a WMI query is listed below. Select * FROM Win32_OperatingSystem WHERE Caption="Microsoft Windows XP Professional" AND CSDVersion="Service Pack 3" Once you have a WMI query configured, you can assign one WMI filter to the Group Policy Object on the scope tab. A free WMI explorer. http://www.ks-soft.net/hostmon.eng/wmi/index.htm Delegation The delegation tab effectively shows some of permissions of the Group Policy Object. In order for the Group Policy to be applied to a client it requires read and apply group policy permissions. To gain access the security properties press the advanced button. If you want to prevent the group policy for being applied, select the deny option for apply group policy. Deny permissions should only be applied when necessary. In most cases there is another solution which does not require deny permissions. References "MCTS 70-640 Configuring Windows Server 2008 Active Directory Second Edition" pg 285 -- 291
Views: 50007 itfreetraining
MCITP 70-640: AGUDLP Group Strategy
This video looks at role based Strategy for Active Directory called AGUDLP. AGUDLP can be used in multiple domain environments to provide distributed control between different domain administrators while still being able to provide access to resources at the forest level. What AGUDLP standards for A Accounts G Global Groups U Universal Groups DL Domain Local Groups P Permissions Advantages of AGUDLP Allows administration to be divided up between different administrators in the forest. Administrators can have control at the forest level or control can be separated at the domain or resources level. Since AGUDLP is a role base strategy, when a user changes their role, for example promoted or transferred, access can quickly and easily be changed. AGUDLP also allows easy auditing. By looking in the group it can quickly be determined who has access to which resources. Why each group is used Global Groups Global groups only contain users, computers, and other global groups from the same domain. Using a global group allows the administrator to divide up control between different domains. For example, if you wanted a sales group that had all sales users from all domains in the forest, you would first create a global group for the sales users in each domain. This allows the domain administrators in each domain to be responsible for keeping this group up to date. Universal Groups Universal groups allow users, computers, global groups and other universal groups to be members. Because of this, they can have the global groups from all the other domains to be members of this group. For example, a universal group could have as members the sales group from all the other domains. Universal groups are available forest wide and thus are replicated using the global catalog server. For this reason, you will want to reduce replication as much as possible in the forest. Replication will only occur when membership of the universal group has changed. Since the universal group contains global groups, the membership of the global groups can change without affecting the membership of the universal group. The only time the universal group would need to be replicated is when a global group is added or removed from the universal group. Domain Local Group The domain local group is applied to the resources as a permission. Domain local groups can only be used in the domain that they were created in. By using domain local groups, a local domain administrator can simply add the domain local group to the resources and configure the appropriate permissions. This administrator may not have access to change the membership of the other groups, which means that they do not have control over which users go into the group. This does not affect their ability to use the group on local resources. This means that by using a domain local group, the scope of the group can be limited to use for that domain only and also be delegated out to other administrators. At this level, it is easy to add or remove the universal group to any domain local group as required, making changing access very quick and flexible. See http://YouTube.com/ITFreeTraining or http://itfreetraining.com for our always free training videos. This is only one video from the many free courses available on YouTube.
Views: 35472 itfreetraining
Windows 2012 Editions
This video will look at the features and functionality that is available in the 4 editions of Windows Server 2012. Check out http://YouTube.com/ITFreeTraining or http://itfreetraining.com for more of our always free training videos. The video covers the basic features and licenses for each edition of Windows Server 2012 so that you can make the correct decision of which Windows Server 2012 edition to purchase. Download the PDF handout http://itfreetraining.com/handouts/se... Windows 2012 Editions Windows 2012 comes in 4 editions, reduced from 7 in Windows Server 2012. These are Foundation, Essentials, Standard and Datacenter. If you compare these to the Windows Server 2008 editions, there is a direct equivalent edition from Foundation to Foundation and Datacenter to Datacenter. The Windows Server 2012 Essentials edition feature wise is most equivalent to the Standard and Web edition of Windows Server 2008. The Standard Edition is equivalent to the enterprise edition of Windows Server 2008. Itanium and 32bit support has been dropped in Windows Server 2012. There is no longer a separate Itanium edition and 32bit editions. The HPC (High Performance Computing) Server edition has also been dropped, but this can be downloaded and installed as a free optional extra for the Standard and Datacenter edition. One of the major differences between Windows Server 2008 and Windows Server 2012 is that you can switch between the full GUI interface and the core interface. Previously in Windows Server 2008, the only way that you could achieve this was to reinstall the operating system. This means you could essentially setup the operating system using the full GUI interface which is a lot easier than using the command line and remove the full core when you have finished configuring the server. If you were using the core interface, you could also add the full GUI interface in later on if you realized that you need additional features, for example you need to use Remote Desktop Services. Foundation The Foundation edition is the cheapest of the Windows Server 2012 editions and thus has the least amount of features. It is targeted toward the small business and thus includes basic file and printing services. The install is limited to 15 users and, unlike the other editions of Windows Server, it defaults to a simple dashboard rather than the server manager. The dashboard is a number of quick links to commonly used configuration options. The last difference is that the install requires a physical computer and a network card to be present. You cannot install Foundation edition into a virtual machine or a computer that does not have a working network card and a device driver available for that network card during the install. Essentials Essentials edition is the same feature wise as the Foundation edition. The main difference between the two is that Essentials supports 25 users rather than 15 users. It can also be installed on a virtual machine and defaults to Server Manager rather than the dashboard found in the Foundation edition. Standard/Datacenter The Standard and Datacenter editions of Windows Server 2012 contains all the features of Windows. The two differences between the 2 editions is that the standard edition supports 2 virtual instances while the Datacenter edition supports any number of virtual instances and Datacenter is not available via retail channels. In this case, a virtual instance means that you can run an additional virtual copy of Windows Server 2012 at no extra cost. For example, you could run 2 standard Virtual Windows Server 2012 instances with a standard Windows Server 2012 license. When both virtual instances are in use, the physical install of Windows Server 2012 standard can only be used to manage the server. This is covered in more detail in the Windows Server 2012 licensing video. The biggest change between the Standard/Datacenter and Foundation/Essentials edition is the way users are licensed. Both the Standard/Datacenter editions do not allow users to use the server unless additional licenses called CALS (Client Access License) are purchased. CAL's are covered in more detail in a later video. Description to long for YouTube. Please see the following link for the rest of the description. http://itfreetraining.com/2012/2012ed... References "Installing and Configuring Windows Server 2012 Exam Ref 70-410" pg 1-6
Views: 223217 itfreetraining
AD FS Claims Provider Trust
This video looks at the theory of a claim provider trust. In order to have a trust in Federation Services a relying party trust and a claims provider trust need to be created. Download the PDF handout http://ITFreeTraining.com/handouts/federation/provider-trust.pdf Trusts in AD FS In the previous video, a relying party trust was created in the ITFreeTraining domain. The configuration in this trust is used to create claims. These claims are sent to the HighCostTraining domain’s Active Directory Federation Server. The claims provider trust is the configuration that is created on that server. This configuration determines what happens when a claim is presented to that server. It may seem that the claims provider trust should be on the ITFreeTraining side. However, when you consider that the claim has been created already, the next step is to create a set of rules that determine what to do when the claim arrives at the server. That is, the claims provider trust is, essentially, the configuration that is used when a claim is presented to that server. If you get confused where the claims provider trust needs to be created, work out which servers accept claims and the configuration needs to be created there. Claim Provider Trust The configuration for the claims provider trust is only one rule. In contrast to the relying party trust which is 3 rules. The rule decides what claims are accepted and also allows changes to the data in that claim to be made. See http://YouTube.com/ITFreeTraining or http://itfreetraining.com for our always free training videos. This is only one video from the many free courses available on YouTube. References “Understanding Key AD FS Concepts” http://technet.microsoft.com/en-us/library/ee913566.aspx
Views: 11534 itfreetraining
MCITP 70-640: Active Directory Migration Tool (ADMT)
ADMT is used to quickly move objects around in your forest. It is used during migrations or when you need to move users between domains during restructures or job changes. This video looks at how to install and use ADMT. Handout http://itfreetraining.com/Handouts/70-640/Part2/admt.pdf Installing ADMT Before installing ADMT, it is worth downloading the ADMT guide (see link below). The guide will show you which installs are supported. If you download the latest version of ADMT or SQL express you may have install problems and need to implement a workaround. Reading this guide will tell you which combination of software will work. http://www.microsoft.com/en-au/download/details.aspx?id=19188 Although possible, it is not recommended to install ADMT on a Domain Controller. The install itself may not work correctly and a workaround many need to be implemented in order to get ADMT to work correctly. Inter-Forest Migration This is when objects are being moved/copied between domains in different forests. The forest can be connected by any valid trust. Intra-Forest Migration This is when the objects are being moved/copied between domains that are in the same forest. Sid History A Sid is a unique number that every object in Active Directory has. When ADMT moves an object it essentially creates a new object in the target domain with the same properties. When a user is moved or copied, the user will have a different Sid than the old user. Because the new user has a different Sid, it will not be able to access any of the resources the old Sid had. Sid history allows Sid's for the old user to be stored with the new user. This essentially allows the new user to access resources that were assigned using the old Sid's. Demonstration In this demonstration ADMT 3.2 will be installed on Windows Server 2008 R2 with SQL Express 2008 SP1 providing the database support. We could not get SQL Express 2012 to work in this configuration and the ADMT guide recommended SQL Express 2008 SP1 to be used. If you run different version and have installation errors, search the Microsoft web site for the error. This may give you a workaround to get that configuration to work. Once ADMT is installed, it is matter of running the required wizard depending on what you want to migrate. When migrating groups, ADMT can be configured to put the user in the same groups that they had in the old domain. In order for this to work, the new domain needs to have those groups created with the same name as the old domain. If you want to migrate passwords between domains, you will need the Password Export Server to be installed in the other domain. Since the ADMT does not check the password policy of the new domain, the user will be asked to change their password when they login to the new domain. See http://YouTube.com/ITFreeTraining or http://itfreetraining.com for our always free training videos. This is only one video from the many free courses available on YouTube. References "MCTS 70-640 Configuring Windows Server 2008 Active Directory" pg 573 -- 576 "Active Directory Migration Tool (ADMT) Guide" http://www.microsoft.com/en-au/download/details.aspx?id=19188 "Active Directory Migration Tool (ADMT) Guide " http://www.microsoft.com/en-au/download/details.aspx?id=19188
Views: 161800 itfreetraining
MCITP 70-640: Active Directory Trusts
Trusts in Active Directory create the pathways for authentication to occur. They are used to link Active Directory domains to each other and also link Active Directory domains to non Microsoft systems. Demonstration 08:56 In order to share resources between two domains, there must a trust or trusts connecting the two domains. Trusts do not provide access they only create a pathway to the destination. Think of trusts like roads: if you need to get to a house and there is a road between you and the house, you can drive to the destination. If the house is locked you won't be able get in unless you have the key. The same applies with trusts: you need the path to the resource via a trust and permission to access the resource. Trust direction (One-way or two) Trusts can be one-way or two-way. If the trust is two-way, then the domain on either side can access the other side. If the trust is one-way, the terminology used to describe the trust will usually be "Domain A trusts domain B." This means that domain A is the trusting domain and domain B will be the trusted domain. For a user in a certain domain to access a resource in another domain, the user needs to be in the trusted domain. Transitive trusts A transitive trust is when a trust can be extended outside of the two domains in which it was created. A domain connected via a transitive trust can thus access any other domain when there is a path of transitive trusts between that domain and the target domain. Non-transitive trust A non-transitive trust is a trust that will not extend past the domains it was created with. If domain A was connected to domain B and domain B connected to domain C using non-transitive trusts the following would occur. Domain A and domain B would be able to access each other. Domain B could access domain C. Domain A, however, could not access domain C. Even though the domains are indirectly connected, since the trust is non-transitive the connection will stop once it gets to domain B. In order for domain A and domain C to communicate using non-transitive trust you would need to create another trust between domain A and domain C. Think of it like having to catch two buses to get to your destination but only having one bus ticket. Transitive and non-transitive trusts will work together. When using both, the pathway through the network will simply stop as soon as a non-transitive trust is travelled over. Due to a limit on the description size on YouTube, please see the following for the rest of the description: http://itfreetraining.com/70-640/active-directory-trusts See http://YouTube.com/ITFreeTraining or http://itfreetraining.com for our always free training videos. This is only one video from the many free courses available on YouTube.
Views: 104403 itfreetraining
MCITP 70-640: Active Directory Groups
Windows allows the creation of groups which simplifies permissions assignment for users. This video looks at how to use groups in Windows and also looks at the basics of how to use role based access control, one strategy used to simplify group administrator in a domain. Groups Each group that is created has a security identifier or SID associated with it. This SID is added to the local access list for the resource that you are controlling access to. A group can be created that does not have a SID that is used for distribution lists. These groups are covered in the next video. Nesting When you place one group inside another group, it is called nesting. Nesting also allows two or more groups to be placed in the same group. This essentially means that administration could be divided between two or more administrators. When administration is separated like this it is often referred to as granular control because each administrator has administrative control over a small part of the whole effects of that group that contains the other groups Using nesting, you could create groups for the users in New York, Washington and London. Using nesting you could create a group called All_Users in which the groups for each location could be put in. Nesting can also be broken down further. For example you could divide New York users into two groups called NY_Sales and NY_Marketing. These two groups could be placed in NY_Users and this group placed in All_Users. If you wanted to create a group for All_Sales users, you could place all the sales groups from each location in this group. Notice using nesting like this means that a new user only needs to be put into the one group. Once in this group, membership of the other groups like the All_Users and All_Sales group through nesting is also achieved, allowing simple administration. Role based access control Role based access control is a strategy of group management generally used in large enterprises. This approach is generally used in companies with more than 500 employees. The approach involves not adding the user or users directly to the resource. In order to grant access, another group is created and assigned permissions to the resource. For example, if you had a share called general you would create two groups called general_share_modify and general_share_read. These would be assigned to the general share and given the required access. In order to give users access to a resource, groups containing users are added to the groups based on the roles in the organization. For example, if all sales users need modify access, the sales group would be added to general_share_modify. If the marketing group needed read access, the marketing group containing all the marketing users would be added to group general_share_read. If a user were to change departments, for example, from sales to marketing, the user's account would simply be removed from the sales group and added to the marketing group. When assigning roles to a user, or removing roles, the resource never needs to be modified. See http://YouTube.com/ITFreeTraining or http://itfreetraining.com for our always free training videos. This is only one video from the many free courses available on YouTube. References "MCTS 70-640 Configuring Windows Server 2008 Active Directory" Microsoft Press, pg 141-144 "Active Directory Users, Computers, and Groups" http://technet.microsoft.com/en-us/library/bb727067.aspx "Role-based access control" http://en.wikipedia.org/wiki/Role-based_access_control
Views: 55016 itfreetraining
Hyper-V Licensing
This video will look at how to correctly license Hyper-V. Check out http://YouTube.com/ITFreeTraining or http://itfreetraining.com for more of our always free training videos. Choice of Virtualization 00:13 The first point to understand with virtualization is that the type of virtualization solution that you use does not affect the licensing of the virtual machine. Microsoft licenses virtual machines independent of the virtualization solution that is used. For example, the administrator could use Hyper-V or another vendor like VMWare or VirtualBox. Access the rest of the course: http://ITFreeTraining.com/hyperv#licensing Download the PDF handout: http://ITFreeTraining.com/handouts/hyperv/licensing.pdf Licensing Datacenter Edition 00:50 If you purchase the Datacenter edition of Windows Server the administrator is free to run an unlimited number of virtual machines running Datacenter. If they run a different edition of Windows Server they will need to purchase additional licenses for those editions. Datacenter has all the features that Windows Server has to offer so the administrator, in most cases, should not have a need to run any other version of Windows. In order to get the best value out of Datacenter a computer needs to be purchased that has a lot of RAM and CPU’s in it. This means that Datacenter is generally an expensive option. Licensing Standard Edition 01:50 When you purchase Windows Server Standard edition you have the right to run 2 virtual machines running Windows Server. You are free to run any virtualization solution that you wish. If you choose to run Hyper-V virtualization solution you are limited to only being able to use the physical server to run the visualization solution. This essentially means that you can only install the Hyper-V role on the server. You are not able to install any additional roles or use the server for any other tasks like file sharing. Licensing Essentials/MultiPoint Edition 02:48 If you are running Windows Server Essentials or Multipoint Editions then the license gives you the choice of two options. You are able to install it on a physical machine or a virtual machine. You are not able to install it on a physical machine and then install the Hyper-V role and run a virtual machine. It is either one or the other. Windows Server 2012 R2 Hyper-V 03:20 This edition is a free edition from Microsoft. This edition is essentially Windows Server with only the Hyper-V role and basic administration functionality. It runs the core interface so it uses less resources than the full interface. Additional resources for CPU, memory and disk space are also saved because, since the editions have only the Hyper-V role, it has less software. This makes it more secure as there is less of a footprint that an attacker could potentially use. The administrator is able to join the server to the domain to manage it like any other server. However, if the administrator finds that they need more functionality later on they are not able to upgrade the install to Windows Server. They will instead need to perform a reinstall. See http://YouTube.com/ITFreeTraining or http://itfreetraining.com for our always free training videos. This is only one video from the many free courses available on YouTube. References “Installing and Configuring Windows Server 2012 Exam Ref 70-410” pg 136 “Hardware-assisted virtualization” http://en.wikipedia.org/wiki/Hardware-assisted_virtualization “Window Server 2012 Products and Editions Comparison” http://www.microsoft.com/en-au/download/details.aspx?id=38809 “Volume Licensing reference guide” http://download.microsoft.com/download/E/6/4/E64F72BF-55E9-4D85-9EFE-39605D7CE272/WindowsServer2012R2_Licensing_Guide.pdf “Hyper-V Server 2012 R2” http://technet.microsoft.com/en-us/evalcenter/dn205299.aspx
Views: 15370 itfreetraining
Installing ADFS on Windows Server 2012 R2
This video from ITFreeTraining will look at how to install Active Directory Federation Services. Check out http://itfreetraining.com for more of our always free training videos. The install requires a certificate. If you do not have certificate services installed, see our previous video on how to install Active Directory Certificate Services: https://www.youtube.com/watch?v=fpvvbeyr7ec Federation: http://ITFreeTraining.com/federation Download the PDF handout http://ITFreeTraining.com/handouts/federation/install-2012r2.pdf Demonstration installing Active Directory Federation Services role 00:42 To start the install, open Server Manager by selecting the shortcut in the quick launch bar. 00:50 From the Server manager home screen, select the option Add roles and features. 00:58 Skip the welcome screen and on installation type select Role-based or feature-based installationand press next. 01:04 On the select destination server screen, select the server that you wish to install the role on and press next. In this case the server ITADFS2012R2.ITFreeTraining.local was selected. 01:12 On the select server roles screen select the option Active Directory Federation Services and press next. 01:24 On the select features screen, no additional features are required so press next to continue. 01:30 The AD FS home screen contains information about AD FS, press next to continue. 01:40 At the confirm installation selection screen press install to install the role. Demonstration requesting and installing a certificate 02:04 To request a certificate from an Enterprise CA, right click the start menu and select run. Enter in the run box mmc and press ok. 02:30 For the certificate management, select Add/Remove snap-in from the file menu. 02:35 From the list of snap-ins select the certificate snap-in and press add. 02:44 You will then be prompted for the scope for the certificate snap-in. Since the certificate will be used by the server, the option for computer account needs to be selected and press next. 02:55 On the select computer screen leave it on the default option of Local computer and press finish and then o.k to complete the wizard. 03:05 If you open the Personal container, this will show all the certificates that are currently installed on that server. 03:13 Certificate is not present and needs to be requested. The default view is not the best view to request the certificate with. To change the view, right click on the container Personal and select options under the view menu. Refresh the view if the option is not present. 03:30 The default mode will be Logical certificate stores. Change this to Certificate purpose and press o.k. 03:45 Select the container Server Authentication, right click it and select the option Request New Certificate under all Tasks. 04:05 On the certificate enrollment wizard, press next to skip the welcome screen. 04:09 The Select Certificate Enrollment Policy screen will ask which enrollment policy you want to use. It is possible to create multiple enrollment policies, however in this case the default enroll policy Active Directory Enrollment Policy will be selected and next pressed. 04:56 The new screen will ask which template will be used to create the certificate. In previous videos the ADFS SSL Certificate template was created. In this case it will be selected and the button enroll pressed. Windows Server will now renew the certificate as required using auto enrollment. 05:30 To complete the wizard press finish and the certificate will be added to the container Server Authentication and MMC can be closed. Demonstration Configuration Active Directory Federation Services 05:38 To configure the Active Directory Federation Services role, select the exclamation mark at the top of Server Manager and select the option Configure the federation service on this server. 05:53 On the welcome screen of the configuration wizard there is an option to configure the farm options for the server. The default option Create the first federation server in a federation server farmwill create a new farm with only that Federation server in it. If you an existing Federation Server Farm and want to add this server to that Federation’s server farm, select the second option Add a federation server to a federation server farm. In previous versions of Active Directory Federations Servers, there was an option for stand-alone, in Windows Server 2012 R2 this option is no longer available. Description to long for YouTube. Please see the following link for the rest of the description. http://itfreetraining.com/federation#/install See http://YouTube.com/ITFreeTraining or http://itfreetraining.com for our always free training videos. This is only one video from the many free courses available on YouTube. References Windows Server 2012: Group Managed Service Accountshttp://blogs.technet.com/b/askpfeplat/archive/2012/12/17/windows-server-2012-group-managed-service-accounts.aspx
Views: 72861 itfreetraining
DNS Replication
DNS replication is the process of coping records from one DNS server to anther. Check out http://YouTube.com/ITFreeTraining or http://itfreetraining.com for more of our always free training videos. This is done through primary and secondary relationship or through active directory replication.
Views: 65244 itfreetraining
The OSI Model
The OSI model even though not adopted in modern networks is still referenced in modern networks.
Views: 81294 itfreetraining
DNS Time to live, aging and scavenging
The DNS settings looked at in this video determine how long DNS records remain on the DNS server or in the DNS cache. Check out http://itfreetraining.com for more of our always free training videos. DNS supports automatic removal of DNS records from the database if the appropriate options have been configured. This video looks at how to configure those options and the effects this can have on your network if the settings are not managed correctly. Download the PDF handout http://ITFreeTraining.com/handouts/dns/aging.pdf Time To Live (TTL) Each DNS record has a time to live (TTL) setting. This value is configured by the DNS administrator. When a DNS record is stored in DNS cache, this DNS record can only be used for the time period stated in the time to live setting. When this expires, the DNS record must be obtained again. In the case of a work station, this means the working contacting a DNS server to obtain the DNS record again. In the case of a DNS server, the DNS server must obtain the DNS record again from another DNS server or from the authoritative DNS server for that DNS domain. This gives the administrator control over how long changes to a DNS records will take to have effect on the network. The lower the time to live setting is configured means changes to the DNS record will take less time to take effect on the network. This is because the DNS record will be discarded from the cache sooner and the DNS server will be forced to query a new copy of the DNS record. A lower setting does result in more DNS queries being sent to an authority DNS server which puts more load on the DNS server. A higher time to live setting means less queries to the authority DNS server, however this also means that changes to the DNS records take longer to take effect on the network. DNS Record Aging Each DNS record has a timestamp which indicates when the DNS record was created or when it was last updated. Dynamic updates allow a client to create their own DNS records on a DNS server. If dynamic updates are enabled, the client is able to update this timestamp. The DNS server, if configured, has the ability to go through and remove DNS records that have not been updated for a set time period. This has to be configured for the DNS server and is not configured by default. When a client starts up and dynamic updates are enabled on the DNS server, the client can request the timestamp to be updated. Depending on the settings on the DNS server will determine when and if the DNS client can update the DNS record. Timestamp Updating On a typical network, each time a client starts up that supports dynamic updates, it will attempt to register its DNS records in the DNS server. In most cases, even when using DHCP, the client will have the same IP address and computer name each day when it starts up. This is because DHCP has a lease time and these lease times generally are configured to span over several days. For this reason, typically the only change to the DNS record when the client attempts to update its DNS record is the timestamp. For this reason, if there are a lot of clients on the network, this means that there are a lot of DNS record changes where only the time stamp has changed. All these changes need to be replicated to the DNS server that is holding that zone file which, in a large company, can result in a lot of network traffic. Description to long for YouTube. Please see the following link for the rest of the description. http://itfreetraining.com/dns#aging References "MCTS 70-640 Configuring Windows Server 2008 Active Directory Second edition" pg 482 "Time to live" http://en.wikipedia.org/wiki/Time_to_live "Understanding aging and scavenging" http://technet.microsoft.com/en-us/library/cc759204(WS.10).aspx "Set Aging and Scavenging Properties for the DNS Server" http://technet.microsoft.com/en-us/library/cc753217.aspx
Views: 32518 itfreetraining
Windows Server 2012 Licensing
Windows Server 2012 licensing is based on the number of CPU's and virtual machines that servers are running. Check out http://YouTube.com/ITFreeTraining or http://itfreetraining.com for more of our always free training videos. This video looks at determining how many Windows Server 2012 licenses you will need and how you can transfer licenses from one server to another server. Download handout http://itfreetraining.com/handouts/server/windowsserver2012licensing.pdf License Per Edition Windows Server 2012 comes in 4 different editions. Depending on which edition that you purchase will determine how many CPU's that server can run and how many virtual instances of that operating system that you can run on that server. If you perform a physical install on Windows Server 2012, you must run any virtual instances for that server on the same server that the physical install is on. Datacenter and standard essentially have the same features as each other, the only real difference between the two editions is that DataCenter supports an unlimited number of virtual machines, while Standard supports 2. Essentials edition differs from the other editions in that the install can only be performed in a virtual or physical machine. This is essentially because there is only one virtual instance supported and also Essentials edition does not support the Hyper-V role. Each edition of Windows Server 2012 allows 2 CPU's to be installed in the server except for the Foundation edition which only allows one CPU to be used in the server. The Foundation install is also the only edition of Windows Server 2012 that does not allow the install to be performed in a virtual machine. The CPU's limit only relates to the number of physical CPU's the computer has. Each CPU can have any number of cores. CPU Licenses Only Standard and Datacenter support more than 2 CPU's in the server. If you want to add additional CPU's you will need to purchase additional Windows Server 2012 licenses. Each license that you purchase will allow you to add 2 additional CPU's to that server. The licenses you need to purchase need to be the same as the edition of Windows Server 2012. Virtual Licenses For each copy of Windows Server 2012 Standard edition that you purchase you can run 2 virtual instances of Windows Server 2012 on that server. If you do use both Windows Server 2012 virtual licenses, the physical install of Windows Server 2012 on that server must be used only to manage the virtual instances. You can't install additional roles on this physical server. You can use a different technology to run the virtual instances. For example, you could run VMware to run the virtual instances. For each additional Windows Server 2012 Standard edition you purchase this will allow you to run 2 more additional Windows Server 2012 virtual servers. Moving Virtual Server You are free to move licenses between servers, however 90 days must past between moves. This prevents virtual machines being moved from server to server if the server was to be taken down for short term maintenance. If you wanted to do this, you would need to purchase additional licenses for the server that will be running the virtual instances while the server is down for maintenance. This rule does not apply if the server experiences extreme hardware failure and was never to be brought back online again. If this is the case, the license can be moved from that server to the replacement server immediately. References "Installing and Configuring Windows Server 2012 Exam Ref 70-410" pg 3,6 "Introduction to Windows Server 2012 Foundation" http://technet.microsoft.com/en-us/li... "Windows Server 2012" http://en.wikipedia.org/wiki/Windows_... "Memory Limits for Windows Releases (Windows)" http://msdn.microsoft.com/en-us/libra...
Views: 58640 itfreetraining
Combining Disks and Basic and Dynamic Disks
This video will look at how multiple disks can be combined together to form the one volume and how basic and dynamic disks work. Dynamic disks are required in most cases when combining disks together. Access the rest of the course http://ITFreeTraining.com/server Download the PDF handout http://ITFreeTraining.com/handouts/server/basic-dynamic.pdf Basic and Dynamic Disks Basic disks have been around since the MS-DOS days and thus have the most compatibility. Dynamic Disks were introduced in Windows 2000 and thus have good compatibility in Windows. Compatibility may become a problem if you use a dynamic disk in Linux. Dynamic disks are supported in Linux however support is dependent on the distribution. Additional packages may need to be installed and the distribution may not support booting from a dynamic disk. Dynamic disks also offer additional features over basic disks. For example, they add a signature to the disk so that if the disk is moved from one computer to another Windows will detect the disk has been moved. Basic disks cannot be combined with other disks and thus features are limited to one disk. For example, an existing volume can be resized on a basic disk. In order to do this there must be contiguous space free at the end of the volume. If this is not there, the disk will need to be defragmented. Basic disks also support booting where dynamic disks only support booting when configured in certain ways. If you want to combine multiple disks together you require dynamic disks. Windows supports a one way conversion between basic and dynamic disks. Dynamic Disk Support Dynamic disks are supported in all Windows Server editions after Windows Server 2000. Client operating systems between XP and 7 require the high business level operating system but after that, all operating systems support dynamic disks. Combining Multiple Disks Dynamic disks allow multiple drives or the space from multiple drives to be combined together in order to create one volume. There are a number of different configurations supported. Spanned volume: A spanned volume combines the space from multiple drives together to form the one volume. This allows you to combine unused space into one volume, however it does not offer redundancy if a drive fails nor does it offer speed improvements. It also does not support booting. Mirrored Volume: This is when two disks have the same data on them. This allows the operating system to continue running if one disk fails. Unlike other dynamic disk configurations, mirrored volumes support booting of the operating system. Striped Volume: This volume takes disks of the same size and combines them together to form the one disk. The data is evenly distributed across the disks. It offers excellent read and write performance however does not offer any redundancy. It also does not support booting. RAID-5: This configuration requires 3 or more drives with the same amount of free space. The drives are combined into one volume. One drive is lost to parity, which is extra data, that means that volume will still keep running if one drive is lost. This volume gives fast read performance but slow write performance. It is available only in Server operating systems and does not support booting the operating system. See http://YouTube.com/ITFreeTraining or http://itfreetraining.com for our always free training videos. This is only one video from the many free courses available on YouTube. References “Installing and Configuring Windows Server 2012 Exam Ref 70-410” pg 44 “Basic and Dynamic Disks” http://msdn.microsoft.com/en-us/library/windows/desktop/aa363785(v=vs.85).aspx “Logical Disk Manager” http://en.wikipedia.org/wiki/Logical_Disk_Manager “What are basic and dynamic disks?” http://windows.microsoft.com/en-au/windows-vista/what-are-basic-and-dynamic-disks
Views: 24820 itfreetraining
PKI Hierarchy
PKI (Public Key Infrastructure) is a hierarchy of Certificate Authorities. This video looks at 3 different types of hierarchies that can be used to issue certificates. Download Handout http://itfreetraining.com/Handouts/Certificates/PKIHierarchy.pdf Considerations When deploying Certificate Authorities (CA's) you should consider the size of your company, geographic distribution and the number of certificates that are required. Before a certificate can be used it needs to be checked that it has not been revoked. This can be done via a CA or online responder. When deploying CA's consider WAN links the users may need to travel over when obtaining new certificates and also checking that an existing certificate is still valid. Single-Tier Hierarchy This means that there is one CA on the network. This is suited for small networks. Having one server does mean less administration; however, it does not provide any fault tolerance. In order to issue certificates, the server must be online. The CA contains private keys and when there is only one CA on the network the server cannot be taken offline in order to protect these keys. If an attacker was to obtain these private keys, they could effectively create their own certificates or decrypt any traffic encrypted with any existing certificate. Two-Tier Hierarchy This contains two levels of CA's. One Root CA and any number of child CA's. In order to improve security, the root CA is usually taken offline after the child CA's have been issued a certificate. The root CA only ever needs to be brought back online if another child CA is added to the network or a child CA needs to renew its certificate. Having a second level provides redundancy as multiple CA's can be created to issue certificates. Different CA's at the second level can be used for different reasons. For example, one CA may be for internal clients while another CA could be used for external customers or business partners. Three-Tier Hierarchy A three tier hierarchy adds another layer of CA's to the hierarchy. This improves security as the first 2 levels can be taken offline when not required. They can be brought back online only when new CA's need to be added to the network. Validity Period The validity period is how long a certificate is valid for before it cannot be used. The root CA certificate is the top of the hierarchy. Once the root CA certificate expires, all certificates in the hierarchy expire with it. For this reason, the root CA normally has a very high validly period like 20 years. A rule of thumb is that subordinate CA's have half the value of their parent CA. If they have the same validly period, this would mean that after the CA has been online for a day, it would be issuing certificates that expire after its parent CA. See http://YouTube.com/ITFreeTraining or http://itfreetraining.com for our always free training videos. This is only one video from the many free courses available on YouTube.
Views: 24310 itfreetraining
MCTS 70-680: BranchCache
BranchCache is a system in Windows that allows files to be cached on the local network rather then coping them again over the wide area network. If you have Windows Server 2008 R2 on the local network this can be done by the Server. If you do not, the Windows client on the network can perform the caching themselves. This video looks at how BranchCache works can how to configure it using Group Policy and netsh. Requirements of BranchCache Windows 7 Enterprise or Ultimate edition Windows Server 2008 R2 How BranchCache Works When a client attempts to access a file from Windows Server 2008 R2 file share across a WAN, the file is first checked to see if a copy of that file is cached locally. This can either by on a Windows Server 2008 R2 local to the client or anther Windows 7 computer that has already copied that file. Before the cached version is use, Windows will generate a hash of the file which is used to determine if the cached file is that same as the file remote file. That is, the file has not changed since it was cached. Hosted Mode This mode requires a Windows Server 2008 R2 server at each remote location to store the cached files. The files are transferred using SSL encryption so the server also requires a SSL certificate. The advantage of hosted mode is that assuming the server is on it will always be available. Distributed mode This mode is when each Windows 7 computer has its own cache. When a file is attempted to be copied over the WAN network, a broadcast is sent on the local network to see if any of the other computer have already copied that file. If they have the file will be copied from the local computer rather then the WAN network again. Group Policy The setting are found under Computer Configuration-Administrative templates-Network-BranchCache There are five settings listed below Turn on BranchCache\Must be enabled to use BranchCache Set BranchCache Distributed Cache Mode\Enabled distributed cache mode Set BranchCache Host Cache Mode\Enables Hosted mode and configures BranchCache server Configure BranchCache for network files\Allows the latency value to be configured. Default 80 Set percentage of disk space used for client computer cache\Configure how much free disk space will be used for BranchCache. The default is 5% Netsh commands 1) Show status of BranchCache netsh branchcache show status 2) Configure Branch Cache Hosted mode netsh branchcache set service mode=HOSTEDCLIENT location=[ServerName] 2) Configure Branch Cache distributed mode netsh branchcahce set service mode=distributed 3) Set cache size in bytes netsh branchCache set cachesize [Size in bytes] 4) Set cache size percentage of total disk size netsh branchCache set cachesize size=20 percent=true 5) Show statistics for the cache Netsh branchcache show localcache 6) Set the latency (Milliseconds of round trip) netsh branchcache smb set latency [value] See http://YouTube.com/ITFreeTraining or http://itfreetraining.com for are always free training videos. This is only one video from the many free courses available on YouTube.
Views: 31940 itfreetraining
MCITP 70-640: Setting an External Time Source
Check out http://itfreetraining.com or http://youtube.com/ITFreeTraining for more of our always free training videos. In any environment you need to ensure that the time and date on your computers is set correctly. If the time drifts too far from the correct time, this can cause problems logging in to the network and cause time sensitive authentication systems to fail. This video looks at keeping computers in your domain up to date and configuring your computers to use a reliable external time source. All computers have a battery on the motherboard that is responsible for ensuring the internal clock inside the computer does not lose power even when the computer is not plugged in. The internal clock can lose or gain time as time passes. If the clocks get out of sync with the correct time, this can affect authentication systems. Authentication systems that use tickets generate the tickets using the time and date. Big differences in these times will mean that new tickets that were just created will be invalid and can't be used. Time Hierarchy When you have computers in a domain, Windows will use a hierarchy approach to ensure that all the times for the computers in the domain are up to date. The root of the hierarchy is the domain controller that is holding the PDC operational master role. This domain controller should have a reliable clock installed in it and/or synced off an external time source. This will ensure that all computers that sync their time from the PDC emulator will have the correct time. If the time is set incorrectly on the PDC emulator, all of the internal clocks of the computers in the domain eventually will be synced to this incorrect time. For this reason it is important to ensure that the domain controller with the PDC emulator role always has the correct time. Below the PDC emulator in the time hierarchy are all the domain controllers. The domain controllers are responsible for making sure all other computers on the network have the correct time. This includes clients and other servers in the domain known as member servers. Multiple domains If you have a network with multiple domains, the child domains should sync their time from the parent domain. The domain controller holding the PDC emulator operational master role in each child domain should be configured to sync their time from the closest domain controller in the parent domain. The PDC emulator in the child domain does not need to sync its time from the PDC emulator in the parent domain; however, it can do so if required. Syncing the time from an external time source In order to keep the time current on the PDC emulator or a stand alone server, an external time source can be used. These external time sources are grouped together to form a hierarchy. Each level of the hierarchy is called a stratum. At the top of the hierarchy is stratum 0 which is a very accurate physical time clock. These include atomic, GPS, and radio clocks. In order to access the time from these hardware clocks, these clocks are directly connected to stratum 1 clocks. Stratum 1 clocks may be configured for private access only to decrease the load on them. At the next level is stratum 2. These clocks sync their time directly from stratum 1 and are generally publicly accessible. It is generally considered better to sync from these time clocks rather than stratum 1 as there are more stratum 2 external time clocks, which helps to reduce the load on stratum 1 time clocks. Regardless of which stratum you choose, you should try to choose an external time server that is close to your server. Refer to http://support.microsoft.com/kb/262680 for information on how to find an external time source close to you. Command line To configure an external time source run the following command. w32tm /config /ManualPeerList:(TimeServer) /SyncFromFlags:manual /Reliable:yes /Update
Views: 60250 itfreetraining
MCITP 70-640: Active Directory adding a child domain
This video looks at how to add a child domain to an existing domain in Active Directory. Child domains can access resources from the parent and also from any other domain in the forest. This video will look at adding the east domain to the existing domain. Demonstration at 04:35 Things to consider before adding a child domain The more domains that you have in your forest, the harder it will be to administer your network. When possible, you should attempt to reduce the number of domains in your forest. Sometimes due to company needs or security reasons, extra domains may be created. It should be remembered that in Windows Server 2008 there have been a number of improvements and features which in previous versions of Windows would have required additional domains. These are: 1) Active Directory could previously only have one password policy per domain. If your domain functional level is Windows Server 2008 or higher, you can support multiple password policies for the same domain. 2) With Windows NT the database was limited to 40 MB, which was around 40,000 objects. Because of this multiple domains may have been required, whereas Active Directory now only requires one. New domains may also be created due to different business unit requirements. In a lot of cases you can separate departments and even companies using organization units inside Active Directory; however, dealing with things like different company budgets is not as simple. If the companies have different IT support staff, they will probably want different domains. Demonstration Creating a new domain or adding a domain controller to an existing domain is all done using DCPromo. 1) When asked, select the option at the top existing forest. Under this, select the option, "create a new domain in an existing forest." This will create the first domain controller in your new domain in the existing forest. 2) You will next be asked for the credentials for a user to add the domain to the existing forest. This needs to be a user in the enterprise administrators group; however, the user does not need to be in the root domain: they can be located in any domain in the forest. 3) Next you need to enter in the name of the parent domain of the child domain. If you are creating a new tree, enter in the new namespace. DCPromo will understand this is a new tree rather than a child domain. 4) Once the relevant details are entered, a Domain Naming Master will be contacted to see if this domain already exists. If the Doman Naming Master can't be contacted DCPromo will fail. 5) Once the Domain Naming Master has been contacted and it has been confirmed this domain does not already exist, you will be asked for the domain functional level. What is available will be determined by what the current forest functional level is. 6) Next you need to select the site where the domain controller will be. If no sites have been created, you can use "default first site name" for the site. 7) Next you can decide if the domain controller is a DNS server and/or a global catalog server. Even if you are creating a completely separate domain you can use a DNS server or even a 3rd party DNS system like UNIX. 8) The wizard will ask you where to put the database, log file and SysVol folder. In most cases leave this on the default. 9) The next screen will ask for an Active Directory recovery password. This is used in certain recovery situations including restoring deleted objects. See http://YouTube.com/ITFreeTraining or http://itfreetraining.com for our always free training videos. This is only one video from the many free courses available on YouTube.
Views: 63185 itfreetraining
Printer Pooling
In this video we’ll take a look at Printer Pooling, which is the process of connecting many physical printers to one of the printer queues. Check out http://itfreetraining.com for more of our always free training videos. This is generally done in a print heavy department with a high volume of output so that printers are always available to load balance the print jobs. Printer pooling provides more output than one physical printer could ever provide. Let’s have a closer look. Access the rest of the course http://ITFreeTraining.com/server Download the PDF handout http://ITFreeTraining.com/handouts/server/print-pooling.pdf Printer Pooling 0:24 – Consider that you have a typical printer queue. Normally this printer queue would be connected to the physical printer, known in Windows terminology as the Printing Device. Printer Pooling allows one printer queue to be connected to 2 or more physical printers. Consider that you have configured a printer in Windows. There are 3 physical printers of the same make and model on the network. You can enable printer pooling so the one printer queue is connected to all 3 of the physical printers. If 3 documents were printed, one after the other, you can see that the documents will be divided up amongst the 3 physical printers. Printer pooling is excellent for certain situations. For example, if you have a student lab where there are a ton of computers and several available, shared individual physical printers - all of the same model of course. This allows many users to print their documents and not worry about which printer is currently in use. Since all of the printers are located in close proximity, it is not difficult for the student to locate the document amongst the printers that could have printed it. How it works 1:30 – Now we’ll go ahead and explain how Printer Pooling actually works. An available physical printer gets the print job which is done in a round robin fashion meaning the next one in order gets it, so it’s not a true load balancing. The size of the print job is not taken into consideration when the print job is sent to the printer. The physical printers also must be all the same type and should all be the same manufacturer and same model as well. This is because printer pooling uses the same printer driver all throughout so different physical printers may give unexpected results. Printer drivers can be very troublesome if they are not the correct versions. Configuring printer pooling is very simple. To enable it, first open the Control Panel and select ‘Devices and Printers’. Once Devices and Printers is open, right click on a printer and select the option “Printer Properties”. Once the properties have been opened, select the ‘Ports’ tab. Notice that only one port can be active at a time. To enable printer pooling, tick the option at the bottom of the screen “Enable Printer Pooling”. Once the option is enabled, you can select multiple ports. Notice that the ports do not have to be the same. For example, you can have one printer connected using the USB and the other over the network. The important point to remember is that the printers that are connected to each port are physically the same. That is the same model from the same manufacturer. If the port that you require is not visible, press the button “Add Port”. For example, if you have network printers you may need to add additional network ports. Notice also, the settings below this, such as the device driver. All of the printers in the printer pool need to share the same settings. See http://YouTube.com/ITFreeTraining or http://itfreetraining.com for our always free training videos. This is only one video from the many free courses available on YouTube. References None Credits Voice Talent: HP Lewis http://hplewis.com Companion Document, Website and Social Media Manager: Phillip Guld https://philguld.com Video Production: Kevin Luttman http://www.KevinLuttman.com Quality Assurance and Web Hosting: Edward M http://digitalmaru.com
Views: 11748 itfreetraining

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