Hackers often gain access to servers through unused (not configured or secured) ports and services, such as Internet Information Services (IIS). To limit entry points, server hardening includes blocking unused ports and protocols as well as disabling services that are not required. Microsoft's latest release of Windows Server 2008 may be on the streets, but the majority of organizations will still rely on Server 2003 for as long as Microsoft supports it. While Server 2003 may not be the latest and greatest, you can ensure a better security posture by taking some easy--but essential--steps to harden your system.