I have a Netgear Wireless router and I cant get JJ2 to work, I'm not even using the wireless function for the computer JJ2 is played on, just a standard ethernet cable. I've tryed forwarding ports 10052-10054 and it doesnt seem to work, here are the options for port forwarding:
SERVICE NAME
STARTING PORT
ENDING PORT
SERVER IP ADRESS
Thats it, if you need a screenshot I can post one.