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Active Directory — Common Ports

Community software entries: links are references, not individual verification.

Default Ports (1)

389
tcpDirectory Services

LDAP (Lightweight Directory Access Protocol) port

MicrosoftDirectoryService

Role Unconfirmed (1)

88
tcpudpSystem

Kerberos authentication protocol port

MicrosoftDirectoryServiceKerberosAuthentication

Scope

Port associations on this page are community-database references (common usage), not a live measurement of any machine; confirm with the official documentation before deployment.