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ISA Server - SecureNAT

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ISA Server - SecureNAT - 11.Sep.2008 9:09:16 AM   


Posts: 15
Joined: 30.Jun.2008
Status: offline
We're busy replacing a separate firewall and proxy server by a single ISA-server.  In the first step I'm replacing the firewall, and keep the current proxy server.  The external side of the firewall is actually a WAN-system.

One of the issues I have, is caused by 'SecureNAT', as we used to connect via systems on the other side of the WAN, but based on the IP-Address from the proxy-server (which is an internal address), and now ISAserver is NAT-ting this to the external IP-Address. 

Is there a way to really route the Proxy-server, or is it necessary to modify all the settings of the firewalls on the other edges of the WAN to allow the ISA-external address ?

When bypassing the 'web-proxy' for http this is improving, but this will than not be possible as soon I use the ISA-server proxy.  Or is it possible to make a setup in which the ISA-proxy is working on an "internal address" ?

I looked at several settings for Webchaining, but like I understand it, this would require ISA-servers on the other side as well ...

Post #: 1
RE: ISA Server - SecureNAT - 11.Sep.2008 2:46:38 PM   


Posts: 2244
Joined: 12.Apr.2004
From: Taylorville, IL
Status: offline
Change the Network Relationship between the Internal and External from "NAT" to "routed".  Access Rules still apply.


Phillip Windell

(in reply to AlainC)
Post #: 2

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