I need to place some domain member servers behind a firewall. There are no domain controllers behind the firewall. Very few ports will be opened back to the main network. For example, one server is a web server and only HTTPS in will be allowed. Domain authenticaion will be allowed (ports 135, 389, 445, 1026 back to the DCs) A policy is in place where the domain member maximum password age is set at 60 days. Will this password change also use the same ports used by user authentication; if not, which ports? And if the password happens to expire, it would prevent user authentication because of a failed computer account, correct?