Need Help Getting Inside / Outside Talking on Cisco 1721

[TechlordTX]

I have a Cisco 1721 Router, with an internal FastEthernet0 port and a WIC Card Ethernet0. I have the FastEthernet set as the internal Ip address of 192.168.0.82 and the Ethernet) set as the external of 12.145.4.98

I am connecting my external Ethernet0 to the ethernet input for a Cisco 2620 managed by AT&T. ATT says they see my connection and it is working. When I am in the SDM on the Router I can ping outside addresses.

From a desktop I can ping the router and the internal network but nothing external.

How do I get the internal to talk to the external?

 

[johnpoole]

add a default route

john poole
bellsouth business
columbia,sc

 

[TechlordTX]

Ok I am a total dummy here, I am used to the NEtopia routers.

I have SDM 2.1.1 how exactly do I add a default route and what settings do I tell it to use?