I cannot connect with my friend in black ops 2. Im pretty sure this is because i have a strict NAT. the question is how do i change it to open. I know this is a very common question but i have tried everything from portforwarding to putting my ps3 in dmz but nothing has changed. I connected my ps3 directly to the modem and it worked so this means that it is to do with my router. Please help!! I have spent hours searching and trying but nothing seems to be working. My router is Linksys WRT400N.
BTW When i do my internet connection test in my ps3 it doesnt show the connection download and upload speed. Maybe this has to do with something?