CyBlock Web filter for ISA Server. It combines precision filtering with the industry's best user-activity reporting in one high-performance, low-cost solution. CyBlock ISA allows administrators the flexibility to block or allow access to Web sites by content category or individual URL. CyBlock's clear, categorized user activity reports provide at-a-glance data on Web usage by individual user, group or enterprise. It filters and reports on up to 81 content categories, including 12 custom categories defined by the administrator. CyBlock ISA supports ISA Servers 2000, 2004, 2006 and Active Directory.