The SonicWALL Content Security Manager 2100 CF Update Service (500 Users) is a 1-Year subscription for SonicWALL's appliance-based Internet filtering solution. The 500-user Update Service can be used to add an additional 500 users to a current subscription or as a service renewal once an existing subscription has expired.The SonicWALL Content Security Manager 2100 CF delivers appliance-based Internet filtering that enhances security and employee productivity, optimizes network utilization and mitigates legal liabilities by managing access to objectionable and potentially illegal Web content such as pornography, hate, nudity and violence. Utilizing a dynamic rating architecture and comprehensive database of millions of Web sites and domains, the Content Security Manager 2100 CF provides network administrators with maximum control to transparently extend policy creation, deployment and enforcement throughout the network.