This page contains instructions how to configure the firewall in Windows Server 2003 Service Pack 1 to work together with F-Secure Anti-Virus server products. The configuration is done through Microsoft's Security Configuration Wizard, introduced in the Windows Server 2003 SP1. The Security Configuration Wizard is now part of the operating system - an automated tool to create security policy for a Windows Server 2003 SP1+ environments.
http://support.f-secure.com/enu/corporate/w2003sp1/