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ZyWALL 2 and ZyWALL 2WE
Content Filtering 17-3
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
Keyword
Blocking
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
http://www.website.com/bad.html would be blocked. Select this check box to enable this
feature.
Domain Name
Type a keyword in this field. You may use any character (up to 64 characters). Wildcards are
not allowed.
Add
Click Add after you have typed a keyword.
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.