Front-End and Back-End Topologies Overview

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The figures in this topic describe the common implementations of the front-end and back-end server architecture. The following figure illustrates a simple Exchange front-end and back-end topology.

An Exchange front-end and back-end server architecture without an advanced firewall

Front-end server in Perimeter Network

The following figure illustrates the recommended scenario that uses an advanced firewall, such as Microsoft® Internet Security and Acceleration (ISA) Server with Service Pack1 (SP1) and Feature Pack1, between the Internet and the Exchange front-end server.

The recommended Exchange front-end and back-end server architecture

ISA Server on Perimeter Network