OpenSSH
| OpenSSH or OpenBSD Secure Shell | |
|---|---|
"Keeping your communiqués secret" | |
| Developer(s) | The OpenBSD Project |
| Initial release | 1 December 1999 |
| Stable release | 10.0
/ 9 April 2025 |
| Repository | |
| Written in | C |
| Operating system | Cross-platform |
| Standard(s) | RFC 4250, RFC 4251, RFC 4252, RFC 4253, RFC 4254, RFC 4255, RFC 4256, RFC 4335, RFC 4344, RFC 4345, RFC 4419, RFC 4462, RFC 5656, RFC 6594, RFC 6668, RFC 7479 |
| Type | Remote access |
| License | BSD, ISC, public domain |
| Website | www |
OpenSSH (also known as OpenBSD Secure Shell) is a suite of secure networking utilities based on the Secure Shell (SSH) protocol, which provides a secure channel over an unsecured network in a client–server architecture.
OpenSSH started as a fork of the free SSH program developed by Tatu Ylönen; later versions of Ylönen's SSH were proprietary software offered by SSH Communications Security. OpenSSH was first released in 1999 and is currently developed as part of the OpenBSD operating system.
OpenSSH is not a single computer program, but rather a suite of programs that serve as alternatives to unencrypted protocols like Telnet and FTP. OpenSSH is integrated into several operating systems, namely Microsoft Windows, macOS and most Linux operating systems, while the portable version is available as a package in other systems.