Registered · Windows

3268 AD Global Catalog (LDAP)

TCP Yes
UDP —
SCTP —
DCCP —

What it is

Microsoft Global Catalog LDAP across the AD forest.

When / why

Forest-wide directory lookups. Domain controllers only.

Protocol status detail

TransportStatusMeaning
TCP Yes Assigned by IANA and standardized, specified, or widely used on this port.
UDP — Not applicable for this transport.
SCTP — Not applicable for this transport.
DCCP — Not applicable for this transport.
« 3260 iSCSI target 3269 AD Global Catalog (LDAPS) »

Port range

Registered (1024–49151). Assigned by IANA on request; usable without elevated privileges on most systems.

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