On our active directory server, I would like to enable LDAP over SSL as per this: http://support.microsoft.com/kb/321051. I am wondering, once this is set up, will LDAP still be listening on the standard port, 389 once this is implemented as well as the secure port? Or will the secure port completely replace the standard port as an option to connect to?

Also, will there need to be any other configurations besides the steps in the article for doing this? In other words, will domain users still be able to authenticate like normal, or is there additional setup that would need to occur?