Chapter 20 Content Filter
NBG-419N User’s Guide
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Keyword Blocking URL Checking

The NBG-419N checks the URL’s domain name (or IP address) and file path
separately when performing keyword blocking.
The URL’s domain name or IP address is the characters that come before the first
slash in the URL. For example, with the URL www.zyxel.com.tw/news/
pressroom.php, the domain name is www.zyxel.com.tw.
The file path is the characters that come after the first slash in the URL. For
example, with the URL www.zyxel.com.tw/news/pressroom.php, the file path is
news/pressroom.php.
Since the NBG-419N 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-419N 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 104 Security > Content Filter > Content Filter