User's Manual

Chapter 14 Content Filtering
NBG-510S User’s Guide
102
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 ZyXEL Device can block Web sites with URLs that contain certain keywords
in the domain name or IP address. For example, if the keyword "bad" was
enabled, all sites containing this keyword in the domain name or IP address will
be blocked, for example, URL http://www.website.com/notbad.html would be
blocked. Select this check box to enable this feature.
Keyword blocking has the ZyXEL Device check all of the characters in the URL.
Keyword Type a keyword in this field. You may use any character (up to 64 characters).
Wildcards are not allowed. You can also enter a numerical IP address.
Keyword List This list displays the keywords already added.
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 web filter is blocking this request.
Delete Keyword Highlight a keyword in the lower box and click Delete to remove it. The keyword
disappears from the text box after you click Apply.
Delete All Click this button to remove all of the listed keywords.
Apply Click Apply to save the settings.
Cancel Click Cancel to start configuring this screen again.
Table 30 Content Filter: Filter
LABEL DESCRIPTION