(adsbygoogle = window.adsbygoogle || []).push({}); Here is a common problem for people who have nat type 3 internet connection and cannot add or join their friends game lobbies. It will most likely happen if both of the players have a nat type 3 because what type 3 means is that you cannot be the host. There may be situations where the other player has nat type 2 and therefore you both can connect to each other, but sometimes even then the connection may get refused. In order to fix this problem you will need to portforward from your router. If you know how to portforward then search for the game you are having problems connecting with and it will show you the ports that game uses.

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make sure it says (ps3) at the end of the title. Ive been having issues adding friends who have nat type 3 on call of duty waw and black ops, now i can add them, I did however ask them to portforward their routers too to insure it would work and since we had the same routers. To note,this will not get you out of nat 3.