Content Filtering Screens; Overview; What You Can Do In The Content Filtering Screens; What You Need To Know About Content Filtering - ZyXEL Communications 5 Series User Manual

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Content Filtering Screens

17.1 Overview

Content filtering allows you to block certain web features, such as cookies, and/or block
access to specific websites. With content filtering, you can do the following:
• Restrict web features. The ZyWALL can block web features such as ActiveX controls,
Java applets, cookies and disable web proxies.
• Create a filter list. You can select categories, such as pornography or racial intolerance, to
block from a pre-defined list.
• Customize web site access. You can specify URLs to which the ZyWALL blocks access.
You can alternatively block access to all URLs except ones that you specify. You can also
have the ZyWALL block access to URLs that contain key words that you specify.

17.1.1 What You Can Do in the Content Filtering Screens

• Use the General screen
configure external database settings.
• Use the Policy screen
your ZyWALL.
• Use the Object screen
restricted web sites, and to block web sites based on keywords
• Use the Cache screen
and their categorization.

17.1.2 What You Need to Know About Content Filtering

Content Filtering with an External Database
When you register for and enable external database content filtering, your ZyWALL accesses
an external database that has millions of web sites categorized based on content. You can have
the ZyWALL block, block and/or log access to web sites based on these categories. The
content filtering lookup process is described below.
ZyWALL 5/35/70 Series User's Guide
(Section 17.2 on page 328) to enable content filtering and
(Section 17.2 on page 328) to configure content filtering policies on
(Section 17.2 on page 328) to configure lists of allowed and
(Section 17.2 on page 328) to view and configure caching of URLs
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