ZyXEL Communications 1000 Manual De Usuario

Chapter 36 Content Filtering

ZyWALL USG 1000 User’s Guide

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. 

Add

Click this to create a new entry. 

Edit

Select an entry and click this to be able to modify it. 

Remove

Select an entry and click this to delete it. 

Trusted Web Site

This column displays the trusted web sites already added.

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”, and so on. You can 
also enter just a top level domain. For example, enter .com to 
allow all .com domains.

Use up to 63 characters (0-9a-z-). The casing does not matter.

Forbidden Web Site List

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

Add

Click this to create a new entry. 

Edit

Select an entry and click this to be able to modify it. 

Remove

Select an entry and click this to delete it. 

Table 171   Configuration > Anti-X > Content Filter > Filter Profile > Customization