Block ALL websites with SonicWall NSA 220

I want to block all website other than the one the users will be accessing.  Is there a way in the SonicWall to do that?
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Blue Street TechLast KnightCommented:
Hi kfasick,

Most certainly! You need to have an active CGSS (Comprehensive Gateway Security Suite Upgrade) license or at the very least a CFS (Content Filtering Service or Premium Content Filtering Service) license. Do you have either?

If so, login to the SonicWALL and go to System > Licenses to check if you are licensed.

Once verified, then go to Security Services > Content Filter and click Configure...
Under the CFS tab check the following: Enable HTTPS Content Filtering, Block traffic to all Web sites, Block Access to URL, & Log Access to URL.
Go the Custom List tab to add the allowed domains you want the users to have access to.
Under the Policy tab click configure next to Default.
Go to the URL List tab and select all the Categories you want to block.
Under the Settings tab make sure everything under Custom List Settings are selected as Global.
Click OK.
Now you should be back in the DELL SonicWALL Filter Properties.
Click OK.
Click Accept on the Content Filter page.

If you have CGSS you can enable and configure AppControl as well to further tighten controls.

Let me know if you have any other questions!

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kfasickAuthor Commented:
I got both subscription, configured it the way you said and works great.  Thanks.
Blue Street TechLast KnightCommented:
Great, glad I could help!
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