SFTP client
The term SFTP can also refer to Secure file transfer program, a command-line program that implements the client part of this protocol, such as that supplied with OpenSSH.
The sftp program provides an interactive interface similar to that of traditional FTP clients.
Some implementations of the scp program actually use the SFTP protocol to perform file transfers; however, some such implementations are still able to fallback to the SCP protocol if the server does not provide SFTP service.
SFTP server
There are numerous SFTP server implementations both for UNIX and Windows. The most widely known is perhaps OpenSSH, but there are also proprietary implementations.
SFTP proxy
The adoption of SFTP is hindered somewhat because it is difficult to control SFTP transfers on security devices at the network perimeter. There are standard tools for logging FTP transactions, like TIS fwtk or SUSE FTP proxy, but SFTP is encrypted, rendering traditional proxies ineffective for controlling SFTP traffic.
There are some tools that implement man-in-the-middle for SSH which also feature SFTP control: such a tool is Shell Control Box from BalaBit. These provide SFTP transaction logging as well as logging the actual data transmitted on the wire.
The term SFTP can also refer to Secure file transfer program, a command-line program that implements the client part of this protocol, such as that supplied with OpenSSH.
The sftp program provides an interactive interface similar to that of traditional FTP clients.
Some implementations of the scp program actually use the SFTP protocol to perform file transfers; however, some such implementations are still able to fallback to the SCP protocol if the server does not provide SFTP service.
SFTP server
There are numerous SFTP server implementations both for UNIX and Windows. The most widely known is perhaps OpenSSH, but there are also proprietary implementations.
SFTP proxy
The adoption of SFTP is hindered somewhat because it is difficult to control SFTP transfers on security devices at the network perimeter. There are standard tools for logging FTP transactions, like TIS fwtk or SUSE FTP proxy, but SFTP is encrypted, rendering traditional proxies ineffective for controlling SFTP traffic.
There are some tools that implement man-in-the-middle for SSH which also feature SFTP control: such a tool is Shell Control Box from BalaBit. These provide SFTP transaction logging as well as logging the actual data transmitted on the wire.
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