ZyXEL NBG-417N User Guide - Page 122
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Chapter 13 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". 13.4 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 79 Security > Content Filter > Filter The following table describes the labels in this screen. Table 53 Security > Content Filter > Filter LABEL Enable URL Keyword Blocking Keyword Keyword List Add DESCRIPTION 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. 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. This list displays the keywords already added. Click Add after you have typed a keyword. Repeat this procedure to add other keywords. Up to 64 keywords are allowed. Delete Clear All 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. Highlight a keyword in the lower box and click Delete to remove it. The keyword disappears from the text box after you click Apply. Click this button to remove all of the listed keywords. 122 NBG-417N User's Guide