I'm trying to configure my DC to support RPC over HTTP but on a non-80 port. It works fine from the local network but I can't get it to work outside the firewall. I do have a port opened from the outside to the inside. I am able to telnet to the port so I know it should not be a firewall issue, but I don't know what else to try. Inside the firewall I refer by machine name (DC1), inside the firewall I refer by DNS name (mydomain.com).