I want to setup a DMZ for the first time using ISA 2004 for a webserver. It will be a trihomed DMZ and what I need help with is the IP address allocations.
Say we have been assigned the following public IP address block
184.108.40.206 - 220.127.116.11 / 255.255.255.240
Now the routers Ip address is 18.104.22.168/255.255.255.240
On the internet side, the firewall's NIC will be 22.214.171.124/255.255.255.240
Then do I make the IP of the NIC on the DMZ side 126.96.36.199/255.255.255.240 and then the Webserver in the DMZ will have the IP 188.8.131.52/255.255.255.240
The firewall NIC on the LAN side will have the IP 192.168.0.10/255.255.255.0 and every other Server/PC on the LAN will follow in this range (192.168.0.0)
So my main question is, is this break down correct or should the IP address allocations for the DMZ part be different, and if different what should it be for the DMZ and the Webserver.
Much appreciate the help