What LDAP ports do Active Directory and the Global Catalog use?

Created: 2012-04-20 08:09:59
Modified: 2026-05-19 13:37:48
Tags: Active Directory

All LDAP ports are TCP. Global Catalog LDAP is read-only.

  • Domain Controller (DC)
    389

  • Domain Controller (DC) SSL/TLS 636

  • Global Catalog (GC)
    3268

  • Global Catalog (GC) SSL/TLS
    3269
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