ZyXEL Communications ZyWall USG 300 User Manual page 654

Chapter 36 Content Filtering
Table 178 Configuration > Anti-X > Content Filter > Filter Profile > Add (continued)
LABEL
Action When Category
Server Is Unavailable
Content Filter Category
Service Timeout
Select Categories
Select All Categories
Clear All Categories
Unsafe Categories
Phishing
654
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.
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 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).
ZyWALL USG 300 User's Guide