User's Guide - Websense Knowledge Bases

Chapter 2: Establishing Filtering Policiesis blocked. URLs not normally associated with the Sports category that alsocontain the string “nba”, such as www.nba.az (used by a financial institutionin Azerbaijan) are also blocked. In such a case, the block page indicates thatthe file is blocked as belonging to the Sports category, because the URLcontains a keyword defined for that category.Keyword blocking may result in unintended blocking. For example, blockingthe keyword sex blocks access to sites such as www.sex.com (an adultmaterial site), but can also block search engine requests for words likesextuplets or City of Essex, which have the word embedded in them.Defining keywords1. Select Keywords in the navigation tree to display the keyword editor.2. Select a category from the list.3. Click Add Keyword. The Add Keyword dialog box appears.4. Enter the keywords for the selected category.• Define each keyword on a separate line.• Do not use spaces between words. URL and CGI strings do notcontain spaces between words. Websense Express matches exactwords or character strings that you have entered as keywords.• Enter a backslash (\) before certain special characters, including thebackslash character itself, or a period (.), comma (,), question mark(?), asterisk (*), or plus sign (+).For example, to block all URLs or CGI strings that include thecharacters .cfm, enter \.cfm. If you do not use the backslash,Websense software ignores the period, and matches any URL or CGIstring that includes cfm.Websense Express User Guide 31