User's Guide - Websense Knowledge Bases

Chapter 2: Establishing Filtering Policies5. Click OK. Each keyword and its associated category is listed in thecontent pane.6. Repeat steps 2 - 6 for each category to which to add keywords.7. Click Save Changes above the navigation tree.8. To use these keywords in filtering, apply keyword blocking in one ormore active URL category filters (see Editing a URL category filter, page28).Implementing file type blockingYou can refine your URL category filters with filtering based on fileextensions, restricting access to particular file types from sites in certaincategories. For example, permit the category Entertainment, but block videofiles from sites in the Entertainment category.NoteTo implement full filtering for video and audio Internetmedia, combine protocol-based filtering with file typefiltering. In this case, protocol filtering handles streamingmedia, while file type filtering handles files that can bedownloaded and then played.32 Websense, Inc.