Hi,
I'm trying to confiigure a cisco 827 to foward requests from the internet back to an internal server. I've got them working for UDP and TCP, but i was wondering how I go about setting them up for other protocols, such as 47 (gre). Computers connect via NAT to the outside world. Internally I have a PPTP VPN server which needs to be externally accessible. I've got the control line (tcp port 1723) forwarded ok, but I just need the data channel now..... Here is the config line for my control channel:
ip nat inside source static tcp 172.20.0.1 1723 interface Dialer1 1723
when i try the obvious:
ip nat inside source static 47 172.20.0.1 interface Dialer1
it crashes out saying that the '47' is invalid. is there a way to do this properly??
Thanks Mike