Mentor ADSL Router Port Forwarding

[Silverscreen]

i have a router made by Mentor:

adsl-mr4c/uk 051900086

i have tried to make the port forwarding work. but yet i cannot get the nat to work. help?

[Gouki]

This maybe one of those cases where you need to update the firmware in order to unlock some stuff. I friend of mine had a Alcatel and he had to update to a 'profissional' firmware version in order for it to work.

Google for your modems firmware.

[DARPA]

Do you use a firewall? how do you forward the port? UDP/TCP? what for?