Secure Shell

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Notes: Ambiguation of questionable value (Discuss in Talk:Secure_Shell#Remove ambiguation)

According to Wikipedia:

Secure Shell (SSH) is a cryptographic network protocol for operating network services securely over an unsecured network. Typical applications include remote command-line login and remote command execution, but any network service can be secured with SSH.

Examples of services that can use SSH are Git, rsync and X11 forwarding. Services that always use SSH are SCP and SFTP.

An SSH server, by default, listens on the standard TCP port 22. An SSH client program is typically used for establishing connections to an sshd daemon accepting remote connections. Both are commonly present on most modern operating systems, including macOS, GNU/Linux, Solaris and OpenVMS. Proprietary, freeware and open source versions of various levels of complexity and completeness exist.

Implementations

https://matt.ucc.asn.au/dropbear/dropbear.html || dropbear
  • OpenSSH — Premier connectivity tool for remote login with the SSH protocol
https://www.openssh.com/portable.html || openssh
  • TinySSH — A minimalistic SSH server which implements only a subset of SSHv2 features; glibc as its single dependency.
https://tinyssh.org/ || tinyssh

Securing

See Security#SSH.

See also