SFTP Scenario
Built into Connectivity Secure Shell is an SFTP proxy server which you can configure to listen on multiple listening interfaces (IP address and port combinations). It is through these listening interfaces that the SFTP proxy server accepts inbound FTP connections (both control and data connections) as would an FTP server. It then interprets the incoming FTP commands and executes them as SSH2 SFTP commands through a tunnel connection to an SFTP server launched by the Secure Shell server on the target host.