>>Read up on SFTP and FTPS: one secures the whole communication, the other only comm setup.
>>Forced it down my brain once, but only into short term memory...
>>Try if WinSCP gets you an idea on the site you want to call.
>
>After more verification, the protocol we need is SFTP SSH. I am not sure if this is supported from .NET. I am in R & D on that today. Basically, I would like to adapt a few lines in my FTP class to support it. But, that assumes that FtpWebRequest is able to deal with that.

I used Eldos Blackbox AFAIR for such a task. Was about 5 years ago,
back then good, fast&competent response on their dev side when I showed them a weakness

not expensive also, ~150€ which were gladly paid as no further runtime cost was incurred.

HTH

thomas