Originally posted by soad08
Way easier trick, dunno y almost no1 use it, found by indy1995: just insert mw2 in ur ps3, go to online lobby, then leave game ans start black ops (w/o restarting ps3), then u get NAT TYpe open
A few of my friends with moderate and strict NAT types can confirm this method.
I have open myself, but they said you can get open for a few days before they went back to strict etc.
Hope I helped!