ZyXEL Communications ZyWALL 2 Series Table 12-2Content Filter : Categories

ZyWALL 2 Series User’s Guide

The following table describes the labels in this screen.

	Table 12-2 Content Filter : Categories
LABEL	DESCRIPTION
Enable Web Site Auto	Enable external database content filtering to have the ZyWALL check an
Categorization	external database to find to which category a requested web page belongs.
	The ZyWALL then blocks or forwards access to the web page depending on
	the configuration of the rest of this page.
Matched Web Pages	Select Block to prevent users from accessing web pages that match the
	categories that you select below.
	When external database content filtering blocks access to a web page, it
	displays the denied access message that you configured in the Content
	Filter General screen along with the category of the blocked web page.
	Select Log to record attempts to access prohibited web pages.
Unrated Web Pages	Select Block to prevent users from accessing web pages that the external
	database content filtering has not categorized.
	When the external database content filtering blocks access to a web page, it
	displays the denied access message that you configured in the Content
	Filter General screen along with the category of the blocked web page.
	Select Log to record attempts to access web pages that are not categorized.
When Content Filter Server	Select Block to block access to any requested web page if the external
Is Unavailable	content filtering database is unavailable. The following are possible causes:
	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 Server	Specify a number of seconds (1 to 30) for the ZyWALL to wait for a response
Unavailable Timeout	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.

Content Filtering Screens 12-7