What is the difference between SCP and SFTP?
SCP and SFTP are different file transfer protocols. SFTP, despite its name, has no relation to FTP. It is a remote file access protocol which provides rich and fine-grained functionality for managing, accessing, and modifying files on an SSH server. SCP is an adaptation of the Unix utility ‘rcp’ to run over an SSH session, and provides simplistic file transfer operations only. SFTP is launched by the client opening a session channel and requesting the ‘sftp’ subsystem. SCP is launched by the client instructing the server to execute the SCP program via an SSH exec request. In WinSSHD 4, the SCP subsystem was not supported as well as SFTP. Since WinSSHD 5, support for the two subsystems is integrated, and the same virtual filesystem can be accessed through SFTP or SCP.
