TRITON - Web Security Help, Version 7.7 - Websense

Internet Usage Filters• To list regular expressions used to define custom URLs or keywords for thecategory, click See regular expressions in this category.3. Use the buttons at the bottom of the category list to change the action applied tothe selected category. For more information about the available actions, seeFiltering actions, page 57.Delegated administrators cannot change the action assigned to categories thathave been locked by a Super Administrator.4. Use the check boxes to the right of the Categories list to apply advanced filteringactions to the selected category:• To change the way that keywords are used in filtering the selected category,mark or clear Block keywords. Filtering based on keyword, page 266• To determine whether users can access certain types of files from sites in theselected category, mark or clear Block file types. See Managing traffic basedon file type, page 282.If you have chosen to block file types, select one or more file types to block.To apply the selected file type settings to all permitted categories in the filter,click Apply to All Categories.WarningWith Websense Web Security Gateway and GatewayAnywhere, applying file type blocking to all categoriesmay have a serious performance impact.All files with an extension that does not match the blockedtype are scanned to find their true file type, including textfiles, like HTML and CSS files.• To specify whether access to sites in the category is limited based on certainbandwidth thresholds, mark or clear Block with Bandwidth Optimizer. SeeUsing Bandwidth Optimizer to manage bandwidth, page 279.If you have chosen to block based on bandwidth, specify which thresholdlimits to use.To apply the selected bandwidth settings to all permitted categories in thefilter, click Apply to All Categories.5. Repeat steps 1 through 3 to make changes to the filtering actions applied to othercategories.6. After editing the filter, click OK to cache your changes and return to the Filterspage. Changes are not implemented until you click Save and Deploy.To activate a new category filter, add it to a policy and assign the policy to clients. SeeInternet Filtering Policies, page 91.TRITON - Web Security Help 63