User's Guide - Websense Knowledge Bases

Chapter 2: Establishing Filtering Policies5. Click OK. The new file type appears in the File Types list.6. Click Save Changes above the navigation tree.7. To use these file types in filtering, apply file type blocking in one or moreactive URL category filters (see Editing a URL category filter, page 28).To change a file type definition, click Edit File Type and use the Edit FileType dialog box to add or remove file extensions. You can add file extensionsto any file type, custom or Websense-defined, but can only delete custom fileextensions.Any time you make a change, remember to click Save Changes above thenavigation tree.Using an approved URL listApproved URL lists provide a very precise method of defining filteringpolicies. Approved URL lists permit a limited set of Web sites for the clientsgoverned by the policy that enforces the list.34 Websense, Inc.