Vote for McAfee SecurityShield
McAfee SecurityShield combines anti-virus, anti-spam, anti-phishing and content filtering technology into a single integrated solution for Microsoft ISA Server 2000 and 2004 deployments. Part of the McAfee Secure Content Management family, SecurityShield provides superior protection and control over Internet and messaging content, including support for all major protocols, filtering rules that can be defined per user group, centralized policy management, and graphical reporting.