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Proofpoint, Inc.

Active Directory Port Settings

Situation You are implementing Active Directory sync and need to know which port to use.
Solution Customers can specify what port and encryption level is used to connect to their AD servers

 

Active Directory Port Settings

With the latest release of Proofpoint Essentials customers now have the option to choose additional connection options to their Active Directory (AD) sync configuration. Customers can specify what port and encryption level is used to connect to their AD servers

Ports

636 (LDAP over SSL)

This is a secure connection over port 636. Commonly known as LDAPS

TLS is not required to be enabled for this option

389 (LDAP:TLS1.2)

Connection over port 389. This requires TLS 1.2 to be enabled

Note: The default setting is TLS 1.2, all existing accounts will default to this option unless otherwise changed

389 (LDAP:Plain-Text)-

Connection over port 389. This plain-text encryption and not secure.

Microsoft has disabled this feature. This is no longer an available option.