ZyXEL Communications 5 Series User Manual

Chapter 17 Content Filtering Screens

ZyWALL 5/35/70 Series User’s Guide

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 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 Server 
Unavailable Timeout

Specify a number of seconds (1 to 30) 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.

Enable Report Service

Select this option to record content filtering reports on myZyXEL.com. These 
reports consist of generated statistics and charts of access attempts to web 
sites belonging to the categories you selected in your content filter 
configuration. Click Report to go to myZyXEL.com. Then do the following to 
view the content filtering reports (see 

 for details). 

1. Log into myZyXEL.com to view a list of registered devices.
2. Click your device’s link to show content filtering reports for your ZyWALL. 

License Status 

This read-only field displays the status of your category-based content 
filtering (using an external database) service subscription.
License Inactive displays if you have not registered and activated the 
category-based content filtering service.
 License Active and the subscription expiration date display if you have 
registered the ZyWALL and activated the category-based content filtering 
service.
Trial Active and the trial subscription expiration date display if you have 
registered the ZyWALL and activated the category-based content filtering 
service.
License Inactive and the date your subscription expired display if your 
subscription to the category-based content filtering service has expired.

Note: After you register for content filtering, you need to wait 

up to five minutes for content filtering to be activated. 
See 

 for how to check the 

content filtering activation.

Table 92   SECURITY > CONTENT FILTER > General