Guys, I am trying to configure a 2600 (12.2) with two fast ethernet ports to operate as a basic router to provide users with Internet access but I am having a problem. The f0/0 interface is 10.0.0.1 and connected to a PC 10.0.0.2 that is using 10.0.0.1 as its gateway. Interface f0/1 is connected to an ADSL modem and have an address of 192.168.1.70. The router can ping internet addresses therefore the connection between it and the outside world is working. The PC can ping both router ip addresses but not the address of the ADSL modem (192.168.1.200) or any other external addresses.
I have added the ip route 0.0.0.0 0.0.0.0 192.168.1.200 to set a default route but stil no luck. Can anyone offer any further suggestions? I thought that this would be all I needed to do!