Heres the problem every time i load up IW5M i hit refresh and it crashes my network every time i do it. so i was wondering what ports do i need to open so i can play i heard if you open specific ports you can play with no problem please tell me the ports to open and weither its tcp or udp. i dont want any ports to make a server i dont want to make one i just need the ports to play in general.

Try 3074 and if that doesn't work let me know

You're going to want to enable UPnP as well to be sure

I get this error with Blackops and never found a way around it...