03/26/2020 369 People found this article helpful 455,953 Views
The Google Drive app like many other such applications uses certificate pinning and due to this when SonicWall Client DPI-SSL is enabled, Google Drive will fail to connect.
In firmware prior to SonicOS 6.2.5.x, Google Drive cannot be excluded from Client DPI-SSL due to the following reasons:
In SonicOS 6.2.5.x firmware, with its DPI-SSL enhancements, it is now possible to exclude or include domains using either the Server Name present in the Server Name Indication (SNI) of the Client Hello or by domain names present in the SAN extension of the Certificate.
This KB article describes how to exclude Google Drive from DPI-SSL inspection without affecting content decryption and inspection of other Google services.
Testing
From a host behind the SonicWall, start the Google Drive app. It must be able to connect and sync.