On Tue, Feb 12, 2013 at 5:19 PM, Sean Devoy <sdevoy@bizfocused.com> wrote:
Then I noticed the Cisco (which is in Gateway mode) has a WAN address of 10.1.10.10!!! I poked around and found the Comcast Business Router on the other side of the Cisco. Yippee DOUBLE NAT. I chose to just say “NO.”
We just got Comcast business class here. We have static addresses assigned to our account, but the Comcast router/modem does both NAT and regular routing at the same time. It's DHCP server will serve addresses from 10.1.10.10 to 10.1.10.199. That's the Comcast fail safe - if you "forget" to configure your interface to one of the static addresses they give you, and leave it on DHCP, then it will still work. (At least until you try to use VoIP!) -- Steve