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5 technical reference, 1 customizing keyword blocking url checking – ZyXEL Communications NBG-417N User Manual

Page 141

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Chapter 14 Content Filtering

NBG-417N User’s Guide

141

The following table describes the labels in this screen.

14.5 Technical Reference

The following section contains additional technical information about the NBG-
417N features described in this chapter.

14.5.1 Customizing Keyword Blocking URL Checking

You can use commands to set how much of a website’s URL the content filter is to
check for keyword blocking. See the appendices for information on how to access
and use the command interpreter.

Domain Name or IP Address URL Checking

By default, the NBG-417N checks the URL’s domain name or IP address when
performing keyword blocking.

This means that the NBG-417N checks the characters that come before the first
slash in the URL.

Table 52 Security > Content Filter > Filter

LABEL

DESCRIPTION

Enable URL
Keyword
Blocking

The NBG-417N 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, e.g., URL http://
www.website.com/bad.html would be blocked. Select this check box to
enable this feature.

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 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.

Apply

Click Apply to save your changes.

Reset

Click Reset to begin configuring this screen afresh