I trying a new post because I've simplified my setup. I'm just learning and I can't seem to get a simple example to work. Following is my setup, I want to be able to Ping the laptop on Network 2. I can telnet to the router and ping it but I can't pin...

I have two internal private networks that I'm trying to connect using a 1721 router. I am able to telnet from network 1 to the router, and ping from router the gw on network 2, but I can't ping anything back on network 1. Also, I can't ping network 2...