Proper ISP Hardware Configuration?

[jims2321]

This will sound stupid... But what are most members using as their firewall/router for their ISP setup? I have (and maybe I have just overlooked it) seen only setups involving the web/ftp/dns but there are no setups describing the proper hardware/network configuration for a DMZ setup. Correct me if I am wrong, but anybody who allows an ISP or other party to control their firewall is asking for trouble.

I am looking at using ISPconfig, on a new server that I have, but it and the mail, ftp, www server will sit in a DMZ zone, and the internal network will also be behind the firewall. Anybody else doing something similar?

Jim