User's Manual

Chapter 20 Content Filter
NBG6515 User’s Guide
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Since the NBG checks the URL’s domain name (or IP address) and file path separately, it will not
find items that go across the two. For example, with the URL www.zyxel.com.tw/news/
pressroom.php, the NBG would find “tw” in the domain name (www.zyxel.com.tw). It would also
find “news” in the file path (news/pressroom.php
) but it would not find “tw/news”.
20.4 Content Filter Screen
Use this screen to restrict web features, add keywords for blocking and designate a trusted
computer.
Click Security > Content Filter to open the Content Filter screen.
Figure 101 Security > Content Filter > Content Filter
The following table describes the labels in this screen.
Table 67 Security > Content Filter > Content Filter
LABEL DESCRIPTION
Enable URL
Keyword
Blocking
The NBG 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