Chapter 14 Content Filtering

Since the NBG-417N 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-417N 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”.

14.4 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 Filter screen.

Figure 78 Security > Content Filter > Filter

The following table describes the labels in this screen.

Table 52 Security > Content Filter > Filter

LABEL

DESCRIPTION

Enable URL

The NBG-417N can block Web sites with URLs that contain certain keywords in

Keyword Blocking

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.

 

 

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NBG-417N User’s Guide