Port
Port 3268 — Global Catalog
Port 3268 (TCP) is used by Global Catalog. Active Directory Global Catalog (LDAP).
Port 3268 at a glance
| Property | Value |
|---|---|
| Port number | 3268 |
| Transport | TCP |
| Service | Global Catalog |
| Category | Registered port |
What it is used for
Active Directory Global Catalog (LDAP).
Security considerations
Restrict to internal AD network.
See our full TCP/UDP port reference and learn how firewalls filter ports in the CyberOps course.
Frequently asked questions
What is port 3268 used for?
Port 3268 (TCP) is used by Global Catalog. Active Directory Global Catalog (LDAP).
Is port 3268 TCP or UDP?
Port 3268 uses TCP.
Is it safe to open port 3268?
Restrict to internal AD network.
Related
Learn networking hands-on
Master IP addressing, subnetting and Cisco configuration on real lab devices with placement support at Attila Technologies, Ahmedabad.