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Create a one-way, outgoing, forest trust for both sides of the trust

Updated: March 2, 2005

Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2

This procedure creates both sides of a one-way, outgoing, forest trust, and it requires you to have administrative credentials for your forest as well as for the reciprocal forest. If you have administrative credentials only for your domain, you can use the procedure Create a one-way, outgoing, forest trust for one side of the trust to create your side of the trust. Then, have the administrator for the reciprocal forest create a one-way, incoming, external trust from his or her forest.

A one-way, outgoing, forest trust allows resources in your Windows Server 2003 forest (the forest that you are logged on to at the time that you run the New Trust Wizard) to be accessed by users in another Windows Server 2003 forest. For example, if you are the administrator of the wingtiptoys.com forest and resources in that forest need to be accessed by users in the tailspintoys.com forest, you can use this procedure to establish one side of the relationship so that users in the tailspintoys.com forest can access resources in any of the domains that make up the wingtiptoys.com forest.

You can create this forest trust by using the New Trust Wizard in Active Directory Domains and Trusts or by using the Netdom command-line tool. For more information about how to use the Netdom command-line tool to create a forest trust, see "Netdom.exe: Windows Domain Manager" in the Windows Server 2003 Technical Reference on the Microsoft Web site (http://go.microsoft.com/fwlink/?LinkId=41700).

Administrative credentials

To perform this procedure, you must be a member of the Domain Admins group (in the forest root domain) or the Enterprise Admins group in Active Directory. If you are a member of the Incoming Forest Trust Builders group, you can create one-way, incoming, forest trusts to your forest. For more information about the Incoming Forest Trust Builders group, see "How Domain and Forest Trusts Work" in the Windows Server 2003 Technical Reference on the Microsoft Web site (http://go.microsoft.com/fwlink/?LinkId=35356).

To create a one-way, outgoing, forest trust for both sides of the trust

  1. Open Active Directory Domains and Trusts.

  2. In the console tree, right-click the domain that you want to establish a trust with, and then click Properties.

  3. On the Trusts tab, click New Trust, and then click Next.

  4. On the Trust Name page, type the Domain Name System (DNS) name (or network basic input/output system (NetBIOS) name) of the domain, and then click Next.

  5. On the Trust Type page, click Forest trust, and then click Next.

  6. On the Direction of Trust page, click One-way: outgoing, and then click Next.

    For more information about the selections that are available on the Direction of Trust page, see the section "Direction of Trust" in Appendix: New Trust Wizard Pages.

  7. On the Sides of Trust page, click Both this domain and the specified domain, and then click Next.

    For more information about the selections that are available on the Sides of Trust page, see the section "Sides of Trust" in Appendix: New Trust Wizard Pages.

  8. On the User Name and Password page, type the user name and password for the appropriate administrator in the specified domain.

  9. On the Outgoing Trust Authentication Level--Local Forest page, do one of the following, and then click Next:

    • Click Forest-wide authentication.

    • Click Selective authentication.

  10. On the Trust Selections Completepage, review the results, and then click Next.

  11. On the Trust Creation Complete page, review the results, and then click Next.

  12. On the Confirm Outgoing Trust page, do one of the following:

    • If you do not want to confirm this trust, click No, do not confirm the outgoing trust. Note that if you do not confirm the trust at this stage, the secure channel will not be established until the first time the trust is used by users.

    • If you want to confirm this trust, click Yes, confirm the outgoing trust, and then supply the appropriate administrative credentials from the specified domain.

  13. On the Completing the New Trust Wizard page, click Finish.

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