If someone is able to help me, that would be great.
We got a new router from our provider, and it works great.
After we opened all the ports for the xbox and other divices, the problem started.
I have a open nat-type, but when i try to join a party/game of a friend, it tells me that there is a connection problem.
The same happens if they try to join me. They have an open nat-type too.
I didn't had this problem with my older router, and i have it with the new one.
If someone knows how to fix this, that would be great.
(Origins is coming tomorrow, and i would like to play it with friends, and i can't do that at the moment :( )