Is LDAP port 389 UDP or TCP?

Posted on by David Darling

Is LDAP port 389 UDP or TCP?

LDAP is an application layer protocol that uses port 389 via TCP or user datagram protocol (UDP).

Does AD use port 389?

Is port 389 on AD in anyway used or required when a new client queries via secure LDAP? I do know port 389 is required on AD for existing user logins, replications etc. so we cannot block port 389 on AD.

What LDAP 636?

LDAPS communication occurs over port TCP 636. LDAPS communication to a global catalog server occurs over TCP 3269. When connecting to ports 636 or 3269, SSL/TLS is negotiated before any LDAP traffic is exchanged.

Is LDAP port 636 secure?

Microsoft will enable LDAP channel binding and LDAP signing on March 2020 in their Active Directory Windows Servers. Because of this Microsoft change, Nutanix recommends changing Prism Authentication from LDAP on port 389 to LDAPS on ports 636 or 3269 which are SSL encrypted.

Is LDAP port 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

Is LDAP port 389 secure?

The port itself is no more secure than unencrypted LDAP traffic, but you do have some alternatives to LDAPS for increasing your security: you could use the LDAPv3 TLS extension to secure your connection, utilize the StartTLS mode to transition to a TLS connection after connecting on port 389, or set up an …

What port is 389 used for?

ldap

Name: ldap
Purpose: Lightweight Directory Access Protocol
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.

What ports are needed for Active Directory?

Contains a brief description of each service.

  • Displays the logical name of each service.
  • Indicates the ports and protocols that each service requires for correct operation.

    • What are the differences between LDAP and Active Directory?

    – Authentication functionality, – Directory, – Group and user management, – Policy administration, – DNS based services, etc.

    What are ports used for Active Directory?

    Active Directory/LSA

  • Computer Browser
  • Distributed File System Namespaces
  • Distributed File System Replication (if not using FRS for SYSVOL replication)
  • File Replication Service (if not using DFSR for SYSVOL replication)
  • Kerberos Key Distribution Center
  • Net Logon
  • Remote Procedure Call (RPC)
  • Server
  • Simple Mail Transfer Protocol (SMTP)

    • How to search Active Directory with ldapsearch?

    Open the ADUC console and go to the Saved Queries section;

  • Create a new query: New > Query;
  • Specify a name for the new saved query and click the Define Query button;
  • Select the Custom Search type,go to the Advanced tab,and copy your LDAP query code into the Enter LDAP query field;