SFTP can be handy in all situations where sensitive data needs to be protected. Since the client needs to be authenticated by the server, SFTP also protects against man-in-the-middle attacks. It uses SSH and encrypted FTP commands to avoid password sniffing and exposing sensitive information in plain text. This protocol assumes that it is run over a secure channel, such as SSH, that the server has already authenticated the client, and that the identity of the client user is available to the protocol. An SFTP client's extra capabilities include resuming interrupted transfers, directory listings, and remote file removal. Even though SFTP is described in the context of the SSH protocol, it can be used in various applications, such as secure file transfer over Transport Layer Security (TLS), and transfer of management information in VPN applications.Ĭompared to the SCP protocol, which only allows file transfers, the SFTP protocol allows for a range of operations on remote files, which make it more like a remote file system protocol. It was designed by the Internet Engineering Task Force (IETF) as an extension of the Secure Shell protocol (SSH) and provides secure file transfer capabilities. SFTP is a network protocol that provides file access, file transfer, and file management over any reliable data stream.
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