• Keep networks and confidential information secure and available
• Protect networks from external threats such as malware delivered over the Web
• Enhance Web security and reduce legal exposure by blocking access to restricted sites
• Scan Internet email and other outbound Web traffic to prevent loss of confidential data
• Detect and prevent proliferation of botnets to protect users against Web 2.0 Internet page and application threats
• Choose among on-premises, hosted, and appliance options for Web security and filtering

Hope that helps!!