newbie question

  • From: Ariel Zubiri <azubiri@xxxxxxxxxxxxx>
  • To: "'isalist@xxxxxxxxxxxxx'" <isalist@xxxxxxxxxxxxx>
  • Date: Fri, 4 Jan 2002 15:35:56 +0800

Hi All,
 
I'm new with ISA Server and I've been using it for 3 months now. Luckily, I
did not encounter any problem publishing my web and mail servers from my
internal network. I just have one question in mind regarding NAT using ISA.
When I added NAT in RRAS and configured my public IP's translated into my
private IP's one is to one, my ISA Server firewall service stops. What I did
was disabling the NAT in RRAS and let it be handled by ISA and everything
works fine. Now, I have this web server in my internal network which has an
internal IP NAT thru ISA to a public IP. So if there's an incoming web
request to my web server it passes thru my ISA and the ISA point it to my
internal web server. What I'm wondering at is why is that when my web server
does an outgoing request it does not use the public IP NAT on my ISA. Also,
when my workstations with firewall client installed does an outgoing web
request passing thru my ISA it uses the public IP assigned to my internal
web server. How would I make sure that the public IP I assigned for my
internal web server is dedicated on this server for incoming and outgoing
web requests?
 
All the public IP addresses were assigned on the external NIC cards of my
ISA server.
 
Thanks in advance,
 
@riel

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