ZyXEL Communications ZyWALL USG 300 User Manual page 661

Table 180 Configuration > Anti-X > Content Filter > Filter Profile > Add (continued)
LABEL
Action When Category
Server Is Unavailable
Select Categories
Select All Categories
Clear All Categories
Security Threat
(unsafe)
Phishing
Spyware/Malware
Sources
ZyWALL USG 300 User's Guide
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:
• 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.
Chapter 36 Content Filtering
661