Is port 389 TCP or UDP?

Is port 389 TCP or UDP?

LDAP is an application layer protocol that uses port 389 via TCP or user datagram protocol (UDP). LDAP queries can be transmitted in cleartext and, depending upon configuration, can allow for some or all data to be queried anonymously.

What is UDP 389 used for?

What is UDP port 389 used for? Answer = LDAP queries.

What is TCP 389 used for?

TCP and UDP 389 For LDAP The well-known port for LDAP is TCP 389. Both UDP and TCP transmission can be used for this port. We can use this port for unsecured and unencrypted LDAP transmission.

What protocol runs on port 389?


Name: ldap
Description: LDAP (which is what people call it) is a modern and popular Internet directory access protocol used by many systems and services. Most Windows users will encounter it because Microsoft’s NetMeeting uses and opens the LDAP port 389 while it is running.
Related Ports: 1002, 1720

Is LDAP 636 TCP or UDP?

Service Name and Transport Protocol Port Number Registry

Service Name Port Number Transport Protocol
ldap 389 udp
ldaps 636 tcp
ldaps 636 udp
www-ldap-gw 1760 tcp

What is my UDP port?

How to find your port number on Windows. Type “Cmd” in the search box. Open Command Prompt. Enter the “netstat -a” command to see your port numbers.

What is LDAP port 389?

LDAP is used by different software like OpenLDAP, Microsoft Active Directory, Netscape Directory Server, Novell eDirectory, etc. LDAP is developed to access the X.500 databases which store information about different users, groups, and entities. TCP and UDP 389 For LDAP The well-known port for LDAP is TCP 389.

Is it possible to block port 389 on ad?

As you mentioned, we could not block port 389 on AD. For LDAPs (LDAP SSL), TCP 636 is used for Directory, Replication, User and Computer Authentication, Group Policy, Trusts. Below are the discussion about the TCP and UDP port 389 and TCP port 636.

What ports does LDAP over SSL use?

Global catalog LDAP over SSL: port 3269 TCP WINS resolution: port 1512 TCP, UDP RPC: Dynamically-assigned ports TCP, unless restricted

What ports are used by Active Directory?

Active Directory Port List TCP and UDP 389 LDAP TCP 636 LDAP SSL TCP 3268 LDAP GC TCP 3269 LDAP GC SSL TCP and UDP 88 Kerberos