Hiya,
Today i been messing around with the configs for MW3
to get my NAT open, so people can join on a party on me, and host games.
MW3 says that u need to open UpNp but thats kinda bullshit.
all u got to do, is foward the right port, and once's u done that, u reset your router and start your game, u will see
your NAT type is open. i been there, and done that.
Under here u will find the port numbers u need to forward for a few COD games.
Enjoy it.
Application
TCP Ports
UDP Ports
Call of Duty
28960
20500, 20510, 28960
Call of Duty - Black Ops
3074, 27014-27050
3074, 3478-4380, 27000-27030
Call of Duty - Modern Warfare 2
27014-27050
1500, 3005, 3101, 3478-4380, 27000-27030, 28960
Call of Duty - Modern Warfare 3
3074, 27014-27050
3074, 27000-27030
Call of Duty - World at War
28960
3074, 28960
Call of Duty 2
28960
20500, 20510, 28960
Call of Duty 4
28960
28960