Policy Configuration : Denying Access to Networks with the IP Deny List

Denying Access to Networks with the IP Deny List
To specify networks that authenticated users are not allowed to access, complete the following steps:
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Expand the WGS tree and click IP Deny List. The IP Deny List page displays.
 
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To enable the IP Deny List, select Enable IP Address Deny List for Authenticated Users.
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To add a URL to the IP Deny List, enter an IP address and subnet mask and click Add IP Deny Entry. Repeat this step for each URL that you would like to add. To delete a URL from the IP Deny List, check the box next to the URL to delete and click the trash can icon.
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When you are finished, click Update. The settings are changed for the selected SonicWALL appliance. To clear all screen settings and start over, click Reset.