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An SSH client is a software program which uses the secure shell protocol to connect to a remote computer. This article compares a selection of notable clients. This article compares a selection of notable clients.
An SSH server is a software program which uses the Secure Shell protocol to accept connections from remote computers. SFTP / SCP file transfers and remote terminal connections are popular use cases for an SSH server.
It is possible, however, to run it over SSH-1 (and some implementations support this) or other data streams. Running an SFTP server over SSH-1 is not platform-independent as SSH-1 does not support the concept of subsystems. An SFTP client willing to connect to an SSH-1 server needs to know the path to the SFTP server binary on the server side.
The SSH client requests a server-side port to be forwarded using a global request. Standard channel types include: shell for terminal shells, SFTP and exec requests (including SCP transfers) direct-tcpip for client-to-server forwarded connections; forwarded-tcpip for server-to-client forwarded connections
The SSH client and key agent are enabled and available by default, and the SSH server is an optional Feature-on-Demand. [ 21 ] In October 2019 protection for private keys at rest in RAM against speculation and memory side-channel attacks were added in OpenSSH 8.1.
AbsoluteTelnet is a telnet client for Windows. It also supports SSH and SFTP. Inetutils includes a telnet client and server and is installed by default on many Linux distributions. Line Mode Browser, a command line web browser; NCSA Telnet; PuTTY and plink command line are a free, open-source SSH, Telnet, rlogin, and raw TCP client for Windows ...
The "Server port" column indicates the port from which the server transmits data. In the case of FTP, this port differs from the listening port. Some protocols—including FTP, FTP Secure, FASP, and Tsunami—listen on a "control port" or "command port", at which they receive commands from the client.
The SCP is a network protocol, based on the BSD RCP protocol, [5] which supports file transfers between hosts on a network. SCP uses Secure Shell (SSH) for data transfer and uses the same mechanisms for authentication, thereby ensuring the authenticity and confidentiality of the data in transit.