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Active Directory Forest

Also known as:Forest

Active Directory Forest: The highest logical structure and principal security boundary of an Active Directory environment. All included domains share schema and configuration partitions and a common trust foundation. Compromise of forest-wide administrative privileges or highly privileged components can therefore endanger every domain in the forest.

How it works and where it fits

Active Directory Forest denotes a technical component or operating environment with its own trust boundaries, identities, interfaces, and dependencies. Security is determined not only by the product, but by architecture, configuration, and the way data and privileges cross component boundaries. Management planes and production processing should be considered separately.

Practical security relevance

Secure operation depends on complete inventory, hardened baselines, least privilege, patchability, and centralized telemetry. Changes should be reproducible and reviewable. Exposed interfaces, default access, secrets, and supply-chain dependencies need particular attention; isolation, backup, and recovery must also be exercised in realistic conditions.

  • Active Directory TreeActive Directory TreeHierarchy of one or more Active Directory domains with a contiguous DNS namespace and transitive trusts.: Hierarchy of one or more Active Directory domains with a contiguous DNS namespace and transitive trusts.
  • Active Directory SchemaActive Directory SchemaForest-wide definition of the object classes and attributes that may be stored in Active Directory.: Forest-wide definition of the object classes and attributes that may be stored in Active Directory.
  • Global CatalogGlobal CatalogForest-wide search and logon service holding complete data for its own domain and selected attributes from every other domain.: Forest-wide search and logon service holding complete data for its own domain and selected attributes from every other domain.
  • Active Directory TrustActive Directory TrustRelationship allowing identities from one Active Directory domain or forest to be authenticated in another security domain.: Relationship allowing identities from one Active Directory domain or forest to be authenticated in another security domain.

Related terms