Yes, I said it, host a server without Portforwarding, if you have a router. If you don’t, you don’t even need to portforward.
Step 1: Download the Vuze Installer.
Step 2: Open up Vuze.
Step 3: Open the tools tab.
Step 4: Open Options.
Step 5: On the options menu click Connection.
Step 6: Set the port to 7001, the defualt Eclispe Origins Port. (Or your custom port.)
Step 7: Apply Vuze Setting.
Step 8: Go back to the Tool>Options>Connection, and make sure your port is the port you set it to be, if not, set it again and apply.
Step 9: Run the server.
Step 10: Have your friends run the game and play!
EDIT: For uTorrent, go to preferences, connection, and change the port.
ALWAYS RUN THE SERVER FIRST, and then uTorrent/Vuze
I find uTorrent is better for port-forwarding, and vuze is better for… well… torrents.