Compared to other questions, mine seems a bit "juvenile," but here goes anyway.I have two 1720 routers connected to each other by two Point-to-Point T1s. I'll call them router 'A' and router 'B'. Router 'C' is a cheap-o DSL router (soon to be a new...

First, any help would be greatly appreciated.I have been assigned the task of installing a firewall that involves a few things that I may be unfamiliar with (i.e., PPPoE, or VPNs perhaps). At one location (building), I have a Cisco 1720 router confi...