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3. Enter a URL and click the button.
4. Click Apply.
3.2.3 Keyword lter
Keyword lter blocks access to webpages containing specied
keywords.
To set up a keyword lter:
1. From the navigation panel, go to Advanced Settings >
Firewall > Keyword Filter.
2. On the Enable Keyword Filter eld, select Enabled.
3. Enter a word or phrase and click the Add button.
4. Click Apply.
NOTES:
• The Keyword 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 Keyword Filter.
• Web pages compressed using HTTP compression cannot be ltered.
HTTPS pages also cannot be blocked using a keyword lter.
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