I have a Buffalo WZR-HP-AG300H router that is attached to a internet modem speedtouch.
The speedtouch have a DMZ for the router, so is the router in charge of the ports.
This is the info page:
Firmware: DD-WRT v24SP2-MULTI (12/17/10) std
Time: 23:20:00 up 19:48, load average: 0.00, 0.00, 0.00
WAN IP: 190.251.222.???
I can acces from a public page the router info page. I setup in NAT/QOS port range forwarding a single rule for TCP/UPD 8000-80000 to my local OSX Lion machine (with fixed IP).
Still this port can't be reached. I restart the router and nothing.
Now in the docs at http://www.buffalotech.com/support/downloads/ say in the port forwarding section that this only work in "Router Mode". So I change in Setup/Advance Routing from bridge to Router but this disable the internet at all!
So, what I need to do to open this port?