said by DarkLogix:said by DrSmith:said by DarkLogix:NAT, on a standard modem? do you even know what you're doing? standard modems are bridges and don't have any interaction with NAT
Right, this would be non-standard and obviously it's no longer a bridge if it is doing NAT. Yes, I know. But as I mentioned things can get more complicated if you run a server.
But here's a real question for all the modem/router separation fans. Which modems can be put into bridged mode by the customer without a call to Comcast support?
If you're running Comcast HSI and not BCI then you can't put hardly any in non-bridged mode.
only time briged mode comes up is BCI and SCM/netgear.
though technical if you're running a server then per the AUP you should be using BCI with statics which kinda kills your idea of a nonSMC type unit
With BCI you'd have your router connected to the SMC and have your statics assigned to your router's wan.
I get the feeling you might not have a good grasp on the situation.
there's really no complication that you think there is
ON HSI (IE resi) the modem is a bridge unless you foolishly get a gateway.
then your router gets a DHCP IP
you do all your nat on your router and there is nothing to be done on the modem
on BCI (business class) you would ether use a standard modem and get a dynamic or use a comcast provided gateway and statics. ether way you then have your router connected to the device with a public IP on the wan of your router.
The reason its foolish to use a gateway with DHCP is you lose control of it, and a firmware update might cost you "years off your life"
Short version is a plain modem is only a bridge and not capable of working in any other mode.