ZyXEL ZyWALL USG 2000 User Guide - Page 628
Block, Content Filter, Server Unavailable Timeout, Block When Content Filter Server Is, Unavailable
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Chapter 36 Content Filtering Table 170 Configuration > Anti-X > Content Filter > Filter Profile > Add (continued) LABEL DESCRIPTION Action When Category Select Pass to allow users to access any requested web page if Server Is Unavailable the external content filtering database is unavailable. Select Block to block access to any requested web page if the external content filtering database is unavailable. Select Warn to display a warning message before allowing users to access any requested web page if the external content filtering database is unavailable. The following are possible causes for the external content filtering server not being available: • There is no response from the external content filtering server within the time period specified in the Content Filter Server Unavailable Timeout field. • The ZyWALL is not able to resolve the domain name of the external content filtering database. • There is an error response from the external content filtering database. This can be caused by an expired content filtering registration (External content filtering's license key is invalid"). Select Log to record attempts to access web pages that occur when the external content filtering database is unavailable. Content Filter Category Service Timeout Specify a number of seconds (1 to 60) for the ZyWALL to wait for a response from the external content filtering server. If there is still no response by the time this period expires, the ZyWALL blocks or allows access to the requested web page based on the setting in the Block When Content Filter Server Is Unavailable field. Select Categories Select All Categories Clear All Categories Unsafe Categories Phishing This setting applies to all of your content filtering profiles. Select this check box to restrict access to all site categories listed below. Select this check box to clear the selected categories below. These are categories of web pages that are known to pose a threat to users or their computers. This category includes pages that are designed to appear as a legitimate bank or retailer with the intent to fraudulently capture sensitive data (i.e. credit card numbers, pin numbers). 628 ZyWALL USG 2000 User's Guide
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