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Chapter 1: Introduction• Custom URLs: Provides 2 ways to change how a URL is filtered.Use the Recategorized list to move a URL from one category toanother to change the way the site is filtered. To ensure that a URL isalways permitted, add it to the Not Filtered list (see Working withcustom URLs, page 43).• Approved URL Lists: Each list defines sites to permit, regardless ofother filtering settings. When you create an approved URL list andapply it in a policy, users governed by that policy can visit only sitesthat appear in the list. See Using an approved URL list, page 34, formore information.• Keywords: A complete list of categories that you can use to definefiltering based on certain words. When you define keywords for acategory, then enable keyword blocking in a URL category filter,<strong>Websense</strong> Express blocks any site whose URL contains a keyword.See Defining keywords, page 31, for more information.• File Types: A list of common file types, like audio files andcompressed files. Each file type definition includes a series of fileextensions (like MP3 and WAV) associated with that type of file. UseURL category filters to block any defined file type within a permittedcategory (see Working with file type definitions, page 33).• Categories: A list of all current URL categories, both <strong>Websense</strong>definedand custom. Use this interface to define custom categories(see Adding a custom category, page 45).• Protocols: A list of all current protocols, both <strong>Websense</strong>-defined andcustom. Use this interface to define custom protocols (see Adding acustom protocol, page 46).Report Administration: A list of reporting roles that you define.Reporting roles determine who can access which aspects of <strong>Websense</strong>Express reporting tools. See Establishing reporting roles in the <strong>Websense</strong>Manager Help system for more information.18 <strong>Websense</strong>, Inc.