Technicolor TC7210D Port Forwarding - Vodafone Cable

Hi,

I just had my old Motorola cable modem "upgraded" to a Technicolor TC7210D. Since then I have been trying to configure my internal network. And I have hit a stumbling block where I can't get the port forwarding to work.

I have read through a few forums on this site and Vodafone's and have read mentions of users not being able to use port forwarding, but the issue has never really been addressed. Can anyone please shed some light on whether this is broken, or there are some weird configuration steps needed.

I have done all I think is necessary (and some hail mary configurations) to get it working. First of all the port forwarding was working on my prior setup (modem->my own router). Now, the services are reachable from the internal network (HTTP, SSH), but not externally. Server's configuration has been triple checked, server firewall is not blocking me.

This is the first router I have used where MAC to IP binding for static IPs isn't used, and what seems to be an automatic discovery used. But it seems to work since the static IP is available on the internal network (which I guess proves the router is doing its job in that regard).

Also as a fallback flicking it into bridging mode is the obvious choice, but from what I read this is not on the feature list of the modem. So I guess I'm stuck.

Any help appreciated.

Cheers

crabbey