When I play Call of Duty Modern Warfare 3 (COD MW3) on my PlayStation 3 (PS3) my friends cannot join my game as in game it says my NAT type is 'STRICT'. Apparently there are 3 names - Strict / Moderate / Open (Strict & Moderate are basically the same thing!) My internet service provider (ISP) is O2 and I use the O2 Wireless Box III (It says Wireless Box II on my router but O2 customer service assure me I have the 3rd one!?). Friends using TalkTalk and Orange broadband always have 'Open' NAT type and so I can join their games but they cannot join mine. (I can't host a game?) In the game it suggests that I enable my uPnP in my router settings (via typing 192.168.1.254 in my browser's address bar, which I have done), but whether this is enabled or disabled it doesn't seem to make a difference... I have read that the best way to ensure your NAT type is always open is to follow a lengthy procedure of creating a 'Static IP Address' for my PS3 and then 'forwarding ports'. I have phoned O2 customer services and they can't advise anything! What shall I do? Please help - I just want to be able to play with my friends when I want to!