title: Mutual SSL Auth Over SFTP?
body: <p>I have a request to setup "mutual SSL Authentication" using SFTP. They want to have a ProFTPd SFTP server authenticate the client by certificate. Is this even possible using SFTP? I assume because SFTP is key based SSH rather than cert based, it is not easily done. I suspect what they really want would be FTPS but they insist SFTP. Is anyone doing anything like this? Thanks!</p>