Chapter 32 Content Filtering

Table 162 Configuration > Anti-X > Content Filter > Filter Profile > Add (continued)

LABEL

DESCRIPTION

Action When Category

Select Pass to allow users to access any requested web page if

Server Is Unavailable

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.

 

 

Content Filter Category

Specify a number of seconds (1 to 60) for the ZyWALL to wait

Service Timeout

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

 

 

 

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.

 

 

Unsafe Categories

These are categories of web pages that are known to pose a

 

threat to users or their computers.

 

 

Phishing

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).

 

 

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ZyWALL USG 50 User’s Guide