About a month ago, my brother had me set up the router so he could host warcraft 3 games. (usually UDP and TCP ports 6112-6119).
Today, he had me do it again for his laptop as the IP's changed. I did it, but no go. His laptop was running vista, so I tried turning off the firewall, and still, nothing.
I had the same settings on the router, so I figured I'd try it on my WinXP computer.
NOTHING.
Tried openning other random ports and testing through canyouseeme.org.
Bypass the router. Your router settings are incorrect. Your private network IP has changed more than likely and now the ports you have opened to the original IP are closed to whatever your new private IP is. Bypass the router to make sure it works that way.