ZyWALL 2 and ZyWALL 2WE

 

 

 

Table 17-1 Content Filter

 

 

 

 

 

 

LABEL

DESCRIPTION

 

 

 

 

 

ActiveX

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

A programming language and development environment for building downloadable Web

 

components or Internet and intranet business applications of all kinds.

 

 

 

 

 

 

 

Cookies

Used by Web servers 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.

 

 

 

 

 

Enable URL

The ZyWALL can be configured to block Web sites containing keywords. For example, if the

 

keyword "bad" was enabled, all sites containing this keyword will be blocked, e.g., URL

 

Keyword

 

http://www.website.com/bad.html would be blocked. Select this check box to enable this

 

Blocking

 

feature.

 

 

 

 

 

 

 

 

Domain Name

Type a keyword in this field. You may use any character (up to 64 characters). Wildcards are

 

not allowed.

 

 

 

 

 

 

 

 

 

 

Click Add after you have typed a keyword.

 

Add

Repeat this procedure to add other keywords. Up to 64 keywords are allowed.

 

When you try to access a web page containing a keyword, you will get a message telling you

 

 

 

 

 

 

that the content filter is blocking this request.

 

 

 

 

 

Delete

Highlight a keyword in the lower box and click Delete to remove it. The keyword disappears

 

from the text box after you click Apply.

 

 

 

 

 

 

 

Clear All

Click this button to remove all of the listed keywords.

 

 

 

 

 

Day to Block

Select check boxes for the days that you want the ZyWALL to perform content filtering. Select

 

the Everyday check box to have content filtering turned on all days of the week.

 

 

 

 

 

 

 

 

Time of Day to Block

Time of Day to Block allows the administrator to define during which time periods content filtering is enabled. Time of Day to Block restrictions only apply to the keywords (see above). Restrict web server data, such as ActiveX, Java, Cookies and Web Proxy are not affected.

Content Filtering

17-3