ZyXEL ZYWALL USG 20W User Guide - Page 499
Content Filtering, ZyWALL USG 20/20W User's Guide
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Chapter 30 Content Filtering Table 142 Configuration > Anti-X > Content Filter > Filter Profile > Add (continued) LABEL Action When Category Server Is Unavailable DESCRIPTION Select Pass to allow users to access any requested web page if 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: Select Categories Select All Categories Clear All Categories Security Threat (unsafe) Phishing Spyware/Malware Sources • 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. 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). This category includes pages which distribute spyware and other malware. Spyware and malware are defined as software which takes control of your computer, modifies computer settings, collects or reports personal information, or misrepresents itself by tricking users to install, download, or enter personal information. This includes drive-by downloads; browser hijackers; dialers; intrusive advertising; any program which modifies your homepage, bookmarks, or security settings; and keyloggers. It also includes any software which bundles spyware (as defined above) as part of its offering. Information collected or reported is "personal" if it contains uniquely identifying data, such as e-mail addresses, name, social security number, IP address, etc. A site is not classified as spyware if the user is reasonably notified that the software will perform these actions (that is, it alerts that it will send personal information, be installed, or that it will log keystrokes). Note: Sites rated as spyware should have a second category assigned with them. ZyWALL USG 20/20W User's Guide 499