During the configuration of security settings for the Active Directory in Windows 2000, administrators may want to implement additional security measures for accessing the Active Directory. Windows 2000 provides Secure Sockets Layer (SSL) security over Lightweight Directory Access Protocol (LDAP). After you install the certificate, the Domain Controllers can communicate over both ports 389 or 636(SSL).
Install an Enterprise Certificate Authority on a Windows 2000 server. All Domain Controllers in the forest will automatically enroll for and install the appropriate certificate.
When you install an Enterprise Certificate Authority, all Domain Controllers automatically request a certificate and can support LDAP using SSL port 636.
For additional information about how to configure clients, click the following article number to view the article in the Microsoft Knowledge Base:
How to Configure the Address Book to Query Users Contained in Active Directory