[blackwulf]

I am positive it is the correct IP & port #.

It is in fact behind a firewall but I have allowed access to that port and my opponent has no problem connecting to my server.

I also disable my firewall in an attempt to see if that was the problem and the problem persists.

FYI: I am able to host and play a DOM I game so I understand the concept. However something seems to be preventing me from hosting and playing a Dom 2 demo game.