LDAP/AD Protocol

Detection Information

The following page provides information on the LDAP/AD Protocol.

Protocol Description

LDAP is a directory service protocol that manages users, groups, passwords, systems and other assets. Popular implementations of LDAP directory services include OpenLDAP, Microsoft Active Directory, and Novell eDirectory.

Full Name

Lightweight Directory Access Protocol / Active Directory




Version 2.88

Port Statistics

IP Protocol Flow Percent
TCP 389 68%
UDP 389 28%
TCP 3268 4%
TCP 50001 < 1%

Port Reference - RFC

  • TCP 3268 - Microsoft Global Catalog
  • UDP 3268 - Microsoft Global Catalog
  • TCP 389 - Lightweight Directory Access Protocol
  • UDP 389 - Lightweight Directory Access Protocol
  • TCP 636 - LDAP Protocol Over TLS/SSL (was Sldap)



External Resources

Protocol Detection

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