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3 NIC with 2 "internal" networks and one ISP - 19.Feb.2008 12:37:32 PM

55west

Posts: 5
Joined: 20.Mar.2007
Status: offline

Not sure if this is the right forum to ask this but here is my requirement:

I have been tasked with publishing web servers in a reverse proxy scenario. These web servers have to be accessible to external clients as well as our own internal data entry people. The web servers are in a different network than our data entry people (10.11.100.X and 10.10.x.x). Right now the data entry people access the web servers directly via static route.

Now, I have decided to deploy an ISA server that will have 3 NIC’s, public IP, 10.11.100.X(web network) and 10.10.X.X. (data entry network). However, I am aware of the single default gateway constraint and was planning on placing the DG on the public IP adaptor. I could add a static route on the ISA 2006 box for the 10.10.X.X segment. Will this work? Also, if this is possible, should the 10.10.X.X be treated as “external” as well?

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RE: 3 NIC with 2 "internal" networks and one ISP - 19.Feb.2008 1:15:42 PM

gbarnas

Posts: 151
Joined: 27.Apr.2005
From: New Jersey
Status: offline

ISA will route between attached subnets - no special configuration.

The DG MUST be on the external interface.

You can define the web interface as a second Internal or as a Perimeter, depending on your security needs. I'd probably lean to Perimeter in this configuration based on the little information here.

Glenn

(in reply to 55west)

Post #: 2