We have a strange problem. We set up a FA Server. The Server runs fine. All members can join but after a few minutes (sometimes 5, sometims 15 minutes or longer) all Players outside my Network are Timed Out by the Server. The Server is still on. Steam works perfectly and i can jump around the map as usual (or i sit above the sewer). But my friends tell me, that the port has changed. What could it be ? The Router settings seems to be correct. The NIS Security Settings are ok.. The server looks good and stable, but what causes the port change problem ? Any ideas and i would be thankful..

Still port problems.. I think i reinstall all... including Router...