ZyXEL Communications ZyWALL 300 User Manual

Chapter 31 Content Filter Screens

ZyWALL USG 300 User’s Guide

The following table describes the labels in this screen.  

Table 150   Anti-X > Content Filter > Filter Profile > Add or Edit > Customization

Filter Profile Name

Enter a descriptive name for this content filter profile name. You may 
use 1-31 alphanumeric characters, underscores(

_

), or dashes (-), but 

the first character cannot be a number. This value is case-sensitive.

Customization Setup

Enable Web site 
customization 

Select this check box to allow trusted web sites and block forbidden 
web sites. Content filter list customization may be enabled and disabled 
without re-entering these site names. 

Allow Web traffic for trusted 
web sites only

When this box is selected, the ZyWALL blocks Web access to sites that 
are not on the Trusted Web Sites list. If they are chosen carefully, this 
is the most effective way to block objectionable material. 

Restricted Web Features 

Select the check box(es) to restrict a feature. When you download a 
page containing a restricted feature, that part of the web page will 
appear blank or grayed out.

Block

ActiveX 

ActiveX is a tool for building dynamic and active web pages and 
distributed object applications. When you visit an ActiveX web site, 
ActiveX controls are downloaded to your browser, where they remain in 
case you visit the site again. 

Java

Java is a programming language and development environment for 
building downloadable Web components or Internet and intranet 
business applications of all kinds.

Cookies

Cookies are files stored on a computer’s hard drive. Some web servers 
use them to track usage and provide service based on ID. 

Web Proxy

A server that acts as an intermediary between a user and the Internet to 
provide security, administrative control, and caching service. When a 
proxy server is located on the WAN it is possible for LAN users to 
circumvent content filtering by pointing to this proxy server. 

Allow Java/ActiveX/Cookies/
Web proxy to trusted web 
sites

When this box is selected, the ZyWALL will permit Java, ActiveX and 
Cookies from sites on the Trusted Web Sites list to the LAN. In certain 
cases, it may be desirable to allow Java, ActiveX or Cookies from sites 
that are known and trusted. 

Trusted Web Sites 

These are sites that you want to allow access to, regardless of their 
content rating, can be allowed by adding them to this list. You can enter 
up to 256 entries.

Add Trusted Web Site

Enter host names such as www.good-site.com into this text field. Do 
not enter the complete URL of the site – that is, do not include “http://”. 
All subdomains are allowed. For example, entering “zyxel.com” also 
allows “www.zyxel.com”, “partner.zyxel.com”, “press.zyxel.com”, etc. 
Use up to 63 characters (0-9a-z-). The casing does not matter.

Trusted Web Sites

This list displays the trusted web sites already added.

Add 

Click this button when you have finished adding the host name in the 
text field above. 

Delete 

Select a web site name from the Trusted Web Sites list, and then click 
this button to delete it from that list.

Forbidden Web Sites

Sites that you want to block access to, regardless of their content 
rating, can be allowed by adding them to this list. You can enter up to 
256 entries.