barcode pdf417 vb.net Lesson 3: Supporting Computer Objects and Accounts in .NET framework

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Lesson 3: Supporting Computer Objects and Accounts
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Lesson 3: Supporting Computer Objects and Accounts
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A computer account begins its life cycle when it is created and when the computer joins the domain. Day-to-day administrative tasks include configuring computer properties; moving the computer between OUs; managing the computer itself; renaming, resetting, disabling, enabling, and, eventually, deleting the computer object. This lesson looks closely at the computer properties and procedures involved with these tasks and will equip you to administer computers in a domain.
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After this lesson, you will be able to: Configure the properties of a computer running Active Directory. Move a computer between OUs. Rename a computer. Disable and enable computer accounts. Reset the secure channel of a domain member computer. Perform administrative tasks with the Active Directory Users and Computers snap-in, command-line commands, VBScript, and Windows PowerShell. Estimated lesson time: 45 minutes
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Configuring Computer Properties
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When you create a computer object, you are prompted to configure only the most fundamental attributes, including the computer name and the delegation to join the computer to the domain. Computers have several properties that are not visible when creating the computer object, and you should configure these properties as part of the process of staging the computer account. Open a computer object s Properties dialog box to set its location and description, configure its group memberships and dial-in permissions, and link it to the user object of the user to whom the computer is assigned. The Operating System tab is read-only. The information will be blank until a computer has joined the domain, using that account, at which time, the client publishes the information to its account. Several object classes in Active Directory support the managedBy attribute that is shown on the Managed By tab. This linked attribute creates a cross-reference to a user object. All other properties the addresses and telephone numbers are displayed directly from the user object. They are not stored as part of the computer object itself. On the Member Of tab of a computer s Properties dialog box, you can add the computer to groups. The ability to manage computers in groups is an important and often underused feature of Active Directory. A group to which computers belong can be used to assign resource access permissions to the computer or to filter the application of a GPO.
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Computers
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As with users and groups, it is possible to multiselect more than one computer object and subsequently manage or modify properties of all selected computers simultaneously.
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Configuring Computer Attributes with Dsmod
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The Dsmod command, which you learned about in 3 and 4, is able to modify only the description and the location attributes. It uses the following syntax:
dsmod computer "DN of Computer" [-desc Description] [-loc Location]
Configuring Computer Attributes with Windows PowerShell or VBScript
In Windows PowerShell and VBScript, you can change attributes of a computer with three steps: 1. Connect to the computer using ADSI and the aDSPath attribute of the computer in the form LDAP://Distinguished Name of Computer. 2. Use the Put method of the computer object to set single-valued attributes. 3. Use the SetInfo method to commit changes to the object. The Windows PowerShell commands are as follows:
$objComputer = [ADSI]"LDAP://DN of Computer" $objComputer.Put ("property", value) $objComputer.SetInfo()
The VBScript code follows this format:
Set objComputer = GetObject("LDAP://DN of Computer") objComputer.Put "property", value objComputer.SetInfo
In both cases, if the value is a text value, it must be surrounded by quotes.
Moving a Computer
Many organizations have multiple OUs for computer objects. Some domains, for example, have computer OUs based on geographic sites, as shown in Figure 5-2. If you have more than one OU for computers, it is likely that someday you will need to move a computer between OUs. You can move a computer in the Active Directory Users and Computers snap-in using either drag and drop or the Move command, available when you right-click a computer. You must have appropriate permissions to move an object in Active Directory. Default permissions allow Account Operators to move computer objects between containers, including the Computers container and any OUs except into or out of the Domain Controllers OU. Administrators, which include Domain Admins and Enterprise Admins, can move computer objects
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