I am also sitting behind a firewall with NAT. Hosting a session of my own does not work, but joining other hosts is no problem. It works fine for me.

Just so that I understand you correctly, do you mean that you can search for hosts, and when you select one of the hosts to search for sessions G2 never finds any? I think I have come across that once or twice, but it works fine most of the time.

Krister