How to Create a Block TCP 25 IPSec Policy

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You must complete all of the following tasks to create a policy to block TCP port 25 through IPSec and Group Policy.

Before You Begin

The procedures linked below specify naming conventions in bold italic. As you work through the procedures, notice that the policies, descriptions, and filters that are named in earlier procedures are referenced in subsequent procedures (again in bold italic).

It is recommended that you review Slowing and Stopping E-mail Viruses in Exchange Server 2003: Optional Configurations before implementing this procedure.

Procedure

To create a block TCP 25 IPSec policy

  1. Create the base Group Policy object. For detailed steps, see How to Create the Base Group Policy Object.

  2. Create the filter lists. For detailed steps, see How to Create IPSec Filter Lists.

  3. Create a block action. For detailed steps, see How to Create a Block Action.

  4. Create and assign the IPSec policy. For detailed steps, see How to Create and Assign the IPSec Policy.

  5. Apply the IPSec Group Policy to other organizational units (optional). For detailed steps, see How to Apply an Existing IPSec Policy on Other Organizational Units.