This might be the wrong forum for this question, but most likely somebody can tell me a better place.
I have a web server listening to port 80 (http) and 443 (https).
I can load pages from it from any computer in my house, all behind the same router, using its IP number.
I enabled port forwarding in the DMZ in my router for ports 80 and 443.
I can't load pages through my router using its WLAN name or WLAN IP number. I get "Unable to connect" from Firefox. or "This site can't be reached" and ERR_ADDRESS_UNREACHABLE from Konqueror.