User's Manual

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3.7.2 URL Filter
You can specify keywords or web addresses to prevent access to
specic URLs.
NOTE: The URL Filter is based on a DNS query. If a network client has
already accessed a website such as http://www.abcxxx.com, then the
website will not be blocked (a DNS cache in the system stores previously
visited websites). To resolve this issue, clear the DNS cache before
setting up the URL Filter.
To set up a URL lter:
1. From the navigation panel, go to Settings > Firewall > URL
Filter.
2. On the Enable URL Filter eld, select Enabled.
3. Enter a URL and click .
4. Click Apply.