by doktor5000 » Aug 7th, '11, 15:47
You should have told that earlier.
For one, almost all 3g providers don't allow packet-based data transfers, like filesharing, check your contract about that.
Also, your external IP will always be that of the AP that your provider gives to you. And that will be used by really many people,
also they won't forward these ports (as they do not allow it). The problem is not with the firewall, but with your connection.
AFAIK, there is no chance in changing that when you still want to use that 3g connection.