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Troubleshooting Question

Sonicwall TZ570 SonicOS 7.0 - App Control Signature Block can't be disabled

Last Modified: 2020-12-02
I have a SonicWall TZ570 firewall with App Control enabled.

The SonicWall is blocking traffic related to a few App Control Signatures I want to allow. I would like to disable the blocking to allow the traffic for those apps by either excluding an Address Range, or disabling the Block completely.

I open App Control -> Signatures, edit the signature, and set Block = Disable.  I then click OK.  The Signature list still shows a green checkmark under the Block column.  The device is still blocked and the System Log shows an Application Control Prevention Alert for the App Control signature.

If I disable App Control completely, the device is not blocked and works fine, and as soon as I re-enable App Control, it is blocked again, confirming that App Control is definitely the cause.

If I set Log = Disable, the green check mark is NOT displayed in the Log column of the App Control Signatures page, so it seems like this might be a bug in the App Control Block setting.

Can anyone confirm?

Screen shots attached

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