Zyxel USG 40W [488/829] Chapter 29 content filtering

Zyxel USG 40 [488/829] Chapter 29 content filtering
Chapter 29 Content Filtering
ZyWALL/USG Series User’s Guide
488
Allow Web traffic for trusted
web sites only
When this box is selected, the ZyWALL/USG 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.
Check Common Trusted/
Forbidden List
Select this check box to check the common trusted and forbidden web sites
lists. See Section 29.4 on page 489 and Section 29.5 on page 490 for
information on configuring these lists.
Restricted Web Features Select the check box(es) to restrict a feature. Select the check box(es) to
restrict a feature.
When you download a page containing ActiveX or Java, that part of the
web page will be blocked with an X.
When you download a page coming from a Web Proxy, the whole web
page will be blocked.
When you download a page containing cookies, the cookies will be
removed, but the page will not be blocked.
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/USG 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.
# This displays the index number of the trusted web sites.
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 127 characters (0-9a-z-). The casing does not matter. “*” can be
used as a wildcard to match any string. The entry must contain at least one
“.” or it will be invalid.
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.
Table 199 Configuration > UTM Profile > Content Filter > Profile > Custom Service (continued)
LABEL DESCRIPTION

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