The Sophos Web Appliances -- part of Sophos Web Security and Control -- block Web threats at the gateway, create and enforce acceptable use policies and provide essential safeguards for data loss. The Web appliance blocks spyware, viruses, phishing, malware and unwanted applications at the gateway, searching for and blocking anonymizing proxies, and enabling comprehensive Web access control for safe, productive web browsing. The scanning engine detects all threats through a unique combination of reputation-based filtering, real-time predictive threat filtering, and content-based filtering. Its easy-to-use management console and powerful reporting tools that deliver rapid insight into web traffic, threats and user behavior, enable secure browsing without the complexity of traditional web filters. As a managed appliance, the Sophos Web Appliance features remote "heartbeat" monitoring and on-demand remote assistance.