SFTP specifications

The SSH File Transfer Protocol (SFTP) is used to transfer files over a cryptographically protected Secure Shell (SSH) connection.

Technical Specifications

SSH

• RFC 4250 The Secure Shell (SSH) Protocol Assigned Numbers
• RFC 4251 The Secure Shell (SSH) Protocol Architecture
• RFC 4252 The Secure Shell (SSH) Authentication Protocol

SFTP

• draft-ietf-secsh-filexfer-00.txt
• draft-ietf-secsh-filexfer-01.txt
• draft-ietf-secsh-filexfer-02.txt The most commonly used version 3 of the protocol. This is the version implemented in OpenSSH.
• draft-ietf-secsh-filexfer-03.txt
• draft-ietf-secsh-filexfer-04.txt
• draft-ietf-secsh-filexfer-05.txt
• draft-ietf-secsh-filexfer-06.txt
• draft-ietf-secsh-filexfer-07.txt
• draft-ietf-secsh-filexfer-08.txt
• draft-ietf-secsh-filexfer-09.txt
• draft-ietf-secsh-filexfer-10.txt
• draft-ietf-secsh-filexfer-11.txt
• draft-ietf-secsh-filexfer-12.txt
• draft-ietf-secsh-filexfer-13.txt

See also

• FTP specifications
• Other specifications