Modify Routing for a Forest Name Suffix

Updated: January 9, 2009

Applies To: Windows Server 2008, Windows Server 2008 R2

If you want to prevent or allow authentication requests for all name suffixes that are identified by a forest trust (*.forestname.com) from being routed to a forest, you can use this procedure to enable or disable routing for the forest name. You can enable or disable routing for a name suffix by using the Active Directory Domains and Trusts snap-in. You can also use the Netdom command-line tool. For more information about using the Netdom command-line tool to modify name suffix routing settings, see Netdom Overview (http://go.microsoft.com/fwlink/?LinkId=111537).

noteNote
When you disable a name suffix, the Domain Name System (DNS) name and all child names of that name will be disabled.

Membership in Domain Admins in the forest root domain or Enterprise Admins in Active Directory Domain Services (AD DS), or equivalent, is the minimum required to complete these procedures. Review details about using the appropriate accounts and group memberships at Local and Domain Default Groups (http://go.microsoft.com/fwlink/?LinkId=83477).

  1. Open Active Directory Domains and Trusts.

  2. In the console tree, right-click the forest root domain for the forest trust that you want to administer, and then click Properties.

  3. On the Trusts tab, under either Domains trusted by this domain (outgoing trusts) or Domains that trust this domain (incoming trusts), click the forest trust that you want to administer, and then click Properties.

  4. Click the Name Suffix Routing tab, and then, under Name suffixes in the x.x forest, do one of the following:

    • To enable routing for a name suffix, click the suffix that you want to enable, and then click Enable. If the Enable button is unavailable, the name suffix is already enabled.

    • To disable routing for a name suffix, click the suffix that you want to disable, and then click Disable. If the Disable button is unavailable, the name suffix is already disabled.

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