This is an appealing choice for smaller companies that want integrated Web filtering for Microsoft ISA Server, Microsoft Proxy Server, Check Point FireWall-1, or Cisco PIX firewall, among many others (Sentian has no standalone option). With its very simple and intuitive interface, Sentian gives administrators the option to block, soft-block (monitor with warning), monitor, or allow content that falls in any of 40 categories defined by Sentian.