Is this setup possible?

From: Alejandro Fernández Preda <quequiel@xxxxxxxxxxxxx>
To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
Date: Sun, 8 Aug 2004 00:12:01 -0300

Hi everyone,

I am just testing a setup with ISA 2004 similar to the one recently published 
by Tom with an internal network, a public IP DMZ and and a private IP Perimeter 
network. I have a router with 2 Internet links in front of ISA (a 128k link for 
services (16 public IP addresses) and a 512k dynamic IP cable modem for users) 
Is it possible to make SNAT users (on the internal network) go out through one 
public IP and web proxy/firewall client users (also on the internal network) 
leave ISA through a different public IP address?

What I wan't is the following, It is not unusual for the cable modem link to 
have intermitent failures, so if I can make web proxy clients leave the ISA 
with a public IP and and SNAT with a different public IP, then I can use the 
router to make them go out either through the cable modem or the 128k link on 
special ocations. (I think I could achieve this asigning 2 IP addreses to the 
external ISA interface) As it is a small company it would be quite easy to tell 
the users not to use proxy when the cable conection failed (it was done this 
way when there was no ISA) 
Is this possible???

Hope I explained myself if not please ask!

Thanks,

    Alejandro Fernández
Buenos Airess - Argentina

Is this setup possible?

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