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Active Directory · identity architecture · Windows Server

Active Directory Forest Trust

An Active Directory forest trust diagram shows the identity boundary between two independently managed forests and the services that need to cross it. Place one domain controller and the relevant administrative or application services inside each forest boundary. Then label the trust and the access path that depends on it. The result helps administrators explain whether two domains are part of the same environment or only connected for a limited collaboration need. It is a useful starting point for a security review because readers can see where authentication authority ends and shared access begins. Add direction and scope when documenting a one-way trust or a specific application relationship.

Type Diagramme de réseauNorme Cisco-convention topology iconsMoteur schematex-networkMis à jour 24/09/2026
Active Directory Forest Trust
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La demande

“An Active Directory forest trust diagram between corp.example.com and partner.example.net, with a domain controller, admin tools, and an application in each forest, a forest trust between the controllers, and cross-forest application access.”

Essayez ensuiteAdd a one-way trust from the partner forest.Add a second domain controller to corp.example.com.
Ce que contient ce dessin

Comprenez les décisions qui le sous-tendent.

01Separate forests

Each organization keeps its own domain controller and administration tools.

02Forest trust

The trust is shown as an explicit identity relationship.

03Cross-forest access

The application path explains why the trust exists.

Use this view to discuss trust boundaries and shared application access; use a domain topology for individual network segments.

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FAQ

Questions fréquentes

What is a forest trust?

A forest trust is an Active Directory trust relationship that can allow authentication and resource access between domains in separate forests.

Why document a trust?

A diagram clarifies the identity boundary, the systems involved, and the access path that relies on the trust.

Does a trust merge two forests?

No. The forests remain separately managed; the trust establishes a defined relationship between them.