Hi, how are you connecting and authenticating to those Sonicwall devices, and how does it fail? Although we don't have any experience with them ourselves, a bit of searching reveals they indeed handle SSH authentication in a non-standard way. However, I'm sure we will be able to make it possible to SSH into them with a bit of your cooperation.
First, please let me know whether you are actually able to connect and authenticate using our SshWinformClient sample. If not, let me know how it fails. Thanks!