Microsoft published rev. 2.0 of their Securing Your Windows Small Business Server 2003 Network guide

This document helps you more securely configure your network that is running the Microsoft Windows Small Business Server 2003 server software (Windows SBS 2003). Completing the tasks in this document helps to protect the availability, integrity, and confidentiality of your local network.

Securing Your Windows Small Business Server 2003 Network 2.0