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Akhater, I thought that would be the case. Anything ISA is capable of is usually pretty well documented. Thanks for verifying.
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Akhater, I thought that would be the case. Anything ISA is capable of is usually pretty well documented. Thanks for verifying.

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Experts, I have a legacy server which I would like to migrate behind a new Forefront implementation. This machine is assigned a public IP, 65.xx.xx.x99. Forefront is tentatively planned to be located at 65.xx.xx.100. The gateway from our ISP is located at 65.xx.xx.105. <br />
There are several more websites published, in the 65.xx.xx.99-114 range. <br />
1:1 NAT is not an option. <br />
<br />
My understanding is that I can set up a route relationship instead of a NAT inside of Forefront to make this happen. I'm also wondering if I need to set up some additional CIDR to further segregate the ranges. I really hope that isn't the case since the gateway was assigned in the middle of our block. <br />
Much beyond that I'm lost. Some quick guidance would be much appreciated. 
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Experts, I have a legacy server which I would like to migrate behind a new Forefront implementation. This machine is assigned a public IP, 65.xx.xx.x99. Forefront is tentatively planned to be located at 65.xx.xx.100. The gateway from our ISP is located at 65.xx.xx.105. 
There are several more websites published, in the 65.xx.xx.99-114 range. 
1:1 NAT is not an option. 

My understanding is that I can set up a route relationship instead of a NAT inside of Forefront to make this happen. I'm also wondering if I need to set up some additional CIDR to further segregate the ranges. I really hope that isn't the case since the gateway was assigned in the middle of our block. 
Much beyond that I'm lost. Some quick guidance would be much appreciated. 

Forefront DMZ Routing

Network design and methodology, also known as network architecture, is the design of a communication network. It is a framework for the specification of a network's physical components and their functional organization and configuration, its operational principles and procedures, as well as data formats used in its operation. In telecommunication, the specification of a network architecture may also include a detailed description of products and services delivered via a communications network, as well as detailed rate and billing structures under which services are compensated.

Network Architecture

Microsoft Forefront, formerly known as Internet Security and Acceleration Server (ISA Server), is a network router, firewall, antivirus program, VPN server and web cache that runs on Windows servers. It includes identity management and protection systems, and discontinued systems for threat management and network protection, along with protection for Sharepoint and Exchange. The scope of discussions includes forward and reverse proxy, application and service publishing, virtual private networks (VPNs), outbound access rules, SSL certificates and network routing within either a single node or an highly-available array pairing.

Microsoft Forefront ISA Server

A router is a networking device that forwards data packets between computer networks. Routers perform the "traffic directing" functions on the Internet. The most familiar type of routers are home and small office cable or DSL routers that simply pass data, such as web pages, email, IM, and videos between computers and the Internet. More sophisticated routers, such as enterprise routers, connect large business or ISP networks up to the powerful core routers that forward data at high speed along the optical fiber lines of the Internet backbone. Though routers are typically dedicated hardware devices, use of software-based routers has grown increasingly common.