Chapter 27 Content Filtering; Overview; What You Can Do In This Chapter; What You Need To Know - ZyXEL Communications ZyWall USG20-VPN User Manual

27.1 Overview

Use the content filtering feature to control access to specific web sites or web content.

27.1.1 What You Can Do in this Chapter

• Use the Filter Profile screens
profiles.
• Use the Trusted Web Sites screens
(allowed) web site addresses.
• Use the Forbidden Web Sites screens
bad (blocked) web site addresses.

27.1.2 What You Need to Know

Content Filtering
Content filtering allows you to block certain web features, such as cookies, and/or block access to
specific web sites. It can also block access to specific categories of web site content. You can create
different content filter policies for different addresses, schedules, users or groups and content filter
profiles. For example, you can configure one policy that blocks John Doe's access to arts and
entertainment web pages during the workday and another policy that lets him access them after
work.
Content Filtering Policies
A content filtering policy allows you to do the following.
• Use schedule objects to define when to apply a content filter profile.
• Use address and/or user/group objects to define to whose web access to apply the content filter
profile.
• Apply a content filter profile that you have custom-tailored.
Content Filtering Profiles
A content filtering profile conveniently stores your custom settings for the following features.
• Category-based Blocking
The USG can block access to particular categories of web site content, such as pornography or
racial intolerance.
C
HAPTER
(Section Figure 289 on page
(Section 27.4 on page
(Section 27.5 on page
USG20(W)-VPN Series User's Guide
416
Content Filtering
421) to set up content filtering
431) to create a common list of good
432) to create a common list of
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