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.