Scenarios for Deploying a Front-End and Back-End Topology

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This topic discusses common scenarios where Exchange front-end and back-end topology is deployed. The scenarios can be broadly divided into intranet and extranet scenarios, with the intranet scenarios focused on performance and scalability and the extranet scenarios focused on security.

In each scenario, the following topics are discussed:

  • Scenario   What is the scenario, and when does it apply?

  • Setup instructions   How to set up the scenario, in general terms. (Specific configuration instructions are covered later in this guide.)

  • Discussion   What is special about this scenario? How does it work? What additional information is required to make decisions about this scenario?

  • Issues   Caveats or limitations of this scenario.

Each of the following four scenarios requires a firewall. You can use software and hardware solutions as a firewall. Port filtering is the minimum requirement for a firewall that protects the server from the Internet.