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Chapter 31 Content Filtering
ZyWALL USG 100/200 Series User’s Guide
538
Unrated Web Pages Select Block to prevent users from accessing web pages that the
external web filtering service 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
Category Server Is
Unavailable
Select Block to block access to any requested web page if the external
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 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.
This setting applies to all of your content filtering profiles.
Select Categories
Advanced/Basic Click Advanced to see an expanded list of categories, or click Basic to
see a smaller list.
Select All Categories Select this check box to restrict access to all site categories listed below.
Clear All Categories Select this check box to clear the selected categories below.
Adult/Mature Content Selecting this category excludes pages that contain material of adult
nature that does not necessarily contain excessive violence, sexual
content, or nudity. These pages include very profane or vulgar content
and pages that are not appropriate for children.
Pornography Selecting this category excludes pages that contain sexually explicit
material for the purpose of arousing a sexual or prurient interest.
Sex Education Selecting this category excludes pages that provide graphic information
(sometimes graphic) on reproduction, sexual development, safe sex
practices, sexuality, birth control, and sexual development. It also
includes pages that offer tips for better sex as well as products used for
sexual enhancement.
Intimate Apparel/Swimsuit Selecting this category excludes pages that contain images or offer the
sale of swimsuits or intimate apparel or other types of suggestive
clothing. It does not include pages selling undergarments as a
subsection of other products offered.
Nudity Selecting this category excludes pages containing nude or seminude
depictions of the human body. These depictions are not necessarily
sexual in intent or effect, but may include pages containing nude
paintings or photo galleries of artistic nature. This category also includes
nudist or naturist pages that contain pictures of nude individuals.
Table 174 Anti-X > Content Filter > Filter Profile > Add (continued)
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