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9.2

Running ISA or TMG with Multiple external IPs

Asked by Jmallit in MS Forefront-ISA

Tags: ISA. TMG, Threat Managment Gateway, Forefront Mulitple IPs

Hello,

This is my first post here.

My company has asked me to set up a new firewall and we are going with Threat Managment Gateway or ISA. I have worked with TMG in Essential Business Server and really liked it so that is my first choice.

My issue is that we have 5 external addresses and 4 Servers that are on the internet. At this point they each are dual nic one with an internal address and one with an external address.

My boss has asked me to set up a network diagram of this so I can display how it will work. My understanding from what I have read is that I will have to assign the external nic of my TMG server all 5 external IPs then route them accordingly. My concern with this if it is in fact true is the issue of bandwith. All connection are going through one nic and there are 4 connections.

If you need anymore information to help me out please let me know. I have done a few setups of ISA but they have all been small businesses with a single external IP address.
[+][-]10/10/09 02:28 PM, ID: 25543894Accepted Solution

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About this solution

Zone: MS Forefront-ISA
Tags: ISA. TMG, Threat Managment Gateway, Forefront Mulitple IPs
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Solution Provided By: keith_alabaster
Participating Experts: 2
Solution Grade: A
 
[+][-]09/08/09 04:24 PM, ID: 25287037Expert Comment

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