Websense Enterprise Filtering 155WebsenseEnterprise FilteringWebsense Enterprise filtering is a third party software package thatallows you to apply content filtering through the Webcache. An externalWebsense Enterprise Server is queried for every Web request theWebcache receives. Websense Enterprise then decides whether to allowor deny the request. When you configure your Webcache to useWebsense Enterprise filtering, the Manual Filtering and the 3Com WebSite Filtering commands on the Webcache will be disabled.When a client computer attempts to access a Web site, the Webcacheapplies the following rules in the order listed:1 Web Client Blocking — If Web Client Blocking has been activated theWebcache checks to see if the client is on the Web Client Blocking List.Unauthorized clients will be blocked. See “Web Client Blocking”onpage 161 for more information.2 Websense Enterprise Server Status — If the Websense Enterprise Serverdoes not respond then the Webcache will filter according to the DefaultRule (Allow All or Deny All) otherwise it will continue with the next rule.See “Default Rule” on page 159 for more information about the DefaultRule.3 Websense Enterprise Server — The Webcache asks the WebsenseEnterprise Server if the Web site should be filtered. See below for asummary of the installation of Websense Enterprise filtering software andfollow the instructions in “Setting Up Websense Enterprise Filtering onyour Webcache” on page 156 to set up your Webcache to use WebsenseEnterprise filtering. Refer to the documentation provided by Websensefor more information about the Websense Enterprise filtering software.The Filter Exclusion, Allow, Deny, and Keyword Blocking lists are ignoredwhen using a Websense Enterprise filtering Server.Acquiring theWebsense EnterpriseFiltering SoftwareYou can acquire the Websense Enterprise filtering software fromWebsense Enterprise resellers around the world. For more informationabout obtaining the software and finding a reseller, go to the WebsenseWeb site:http://www.websense.comInstalling theWebsense EnterpriseFiltering SoftwareWhen you install the software, you must install and configure WebsenseEnterprise on a server of your choice. When you are offered a choice ofthe integration mode in the Websense Enterprise installer, you mustdua1611-5aaa04.book Page 155 Friday, November 29, 2002 8:56 PM
