I think you have to open up some ports.
How the fuck do i change my nat type to open? i can never find a fucking game and when i do it lags so fucking much i might as well play fucking cod4. this is pissing me the fuck off Can anyone help?
I think you have to open up some ports.
Open your ports for incomming connections (default for MW3 is in the 27000-27100 range) and maybe enable Upnp if needed..
Just go to your router's settings and assign your computer to be the DMZ. All problems solved forever.
If it is done by IP, make sure to give your mac address a static IP first.
what does that mean?
Google is amazing.
how to open ports - Google Search
It could be your Windows firewall or most likely your router's firewall.
Check which ports MW3 uses and open those.
you dont need to fucking open ports, you need to enable NAT, or allow the game through your firewall. jeez.
enable you UpNP via router:
PC:
TCP: 27014-27050, 3074
UDP: 27000-27014, 27015-27030, 3074
done
you do need to open ports on some routers....
OPEN YOUR PORTS
You can do this through the default gateway on your router.