This solution applies to Barracuda SSL VPNs, firmware version 1.6.x and above.
Network Access Control can be configured to periodically check that all connected systems still meet the current requirements. To configure this, go to ADVANCED > Configuration and locate the NAC section. Set the Continuous NAC Check (mins) option to the number of minutes between each NAC check. Set this to 0 to disable periodic checking. Save the changes when complete. Now, when a user is connected to the SSL VPN, their session will be checked periodically to ensure they remain within the allowed configuration. If a check finds they do not comply, the user’s access is blocked and they will be logged out of the SSL VPN.
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