UDP, 10052-10054. I know this.

As I already said, it sometimes ping, sometimes not, as if my PC was always lagging out. And when the player tries to connect, he gets stuck at the "connecting" screen, until he presses Esc.
Now I know how to forward a port, and I forwarded it. I also used the Application Rules to pre-configure those ports on Jazz2, to increase my chances. The problem is certainly another, but nobody wants to tell me what it is.

I DO have idea what I'm doing! The problem could be either those who made Wondows 8, trying to sabotage everyone's gaming experience for no reason (Simcity Societies also stopped working as I passed to Windows 8) or those who made the D-Link router, since I could host games with other routers. Or maybe someone around here decided that anything not related to Camel Duels or Puke Nukem mustn't even be hosted ...