So I just downloaded Modern Warfare 2 for my PC, and when I go to play online, it says my NAT is set to Strict. I somehow got it set to Open last night, but recently the power went out and now it's set back to Strict again. How exactly do I get my NAT to be permanently set to Open? Please give me step-by-step instructions if you can. I've already established that I have to log into my router (Linksys Cisco). I logged in and there's all these settings options. UPnP is enabled and NAT is enabled. Now what?
