Active Directory Trust
Also known as:Trust
Active Directory Trust: Connects authentication realms without automatically granting access to resources. Direction, transitivity, and trust type determine which identities are accepted across a boundary; authorization is then evaluated at the target resource. Forest trusts need safeguards such as selective authentication and SID filtering because misconfiguration can open attack paths between environments.
How it works and where it fits
Active Directory Trust is a building block of security architecture that must be understood in its system and business context. Its intended objective, affected trust boundaries, prerequisites, and interaction with other controls are decisive. An isolated definition is therefore not sufficient for implementation or assessment.
Practical security relevance
Sound implementation assigns ownership, configuration, data sources, and verifiable success criteria. Assumptions and exceptions should be documented and changes controlled. Periodic testing shows whether the concept reduces risk in the actual environment or has merely been addressed as a formal requirement.
Related concepts
- Active Directory DomainActive Directory DomainLogical Active Directory partition with a shared directory database, namespace, policies, and domain controllers.: Logical Active Directory partition with a shared directory database, namespace, policies, and domain controllers.
- Active Directory ForestActive Directory ForestTop-level Active Directory structure whose domains share a schema, configuration, global catalog, and mutual trust foundation.: Top-level Active Directory structure whose domains share a schema, configuration, global catalog, and mutual trust foundation.
- AuthenticationAuthenticationVerification of the claimed identity of a user or system.: Verification of the claimed identity of a user or system.
- AuthorizationAuthorizationDecision regarding which actions an authenticated identity is permitted to perform.: Decision regarding which actions an authenticated identity is permitted to perform.