This solution applies to all Barracuda SSL VPN units.
Answer:The login error:
This error indicates that the client system does not meet the required NAC rules that have been set for the SSL VPN. The exact reason for this can be found by examining the User Activity Logs (available to the ssladmin and any users with the sufficient access rights).
From the User Activity Log it is possible to automatically create a NAC Exception for the user affected, alternativly the administrator can simply tell the user why they were blocked and how they can resolve the issue (e.g. use another browser, update Flash, install hotfixes, etc)
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