I am having an issue with my mac airport extreme. Brettspiel has worked on my home network until very recently. It all of the sudden stopped working. It still works from my work and school and when I bypass the airport using a cable. So I have narrowed the problem down to my airport.
I checked on the Ports and the airport extreme has a NAT Mapping system that automatically opens ports. I have checked to make sure it is opening the port for brettspiel but I think this might be the problem.
I am using DHCP, WPA2 security, and like I said, It works on other networks.