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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, [7] [8] while the portable version is available as a package in other systems ...
Secure Shell (SSH) is a protocol allowing secure remote login to a computer on a network using public-key cryptography.SSH client programs (such as ssh from OpenSSH) typically run for the duration of a remote login session and are configured to look for the user's private key in a file in the user's home directory (e.g., .ssh/id_rsa).
Dropbear is a software package written by Matt Johnston that provides a Secure Shell-compatible server and client. [2] It is designed as a replacement for standard OpenSSH for environments with low memory and processor resources, such as embedded systems.
Linux HP-UX Java macOS Solaris Windows Bitvise SSH Server Bitvise Limited 2001 Windows 9.32 [2] [3] 2023-12-20 Proprietary [a] CopSSH: Itefix 2003-08-12 Cygwin 7.10.1 [4] 2022-06-21 Proprietary: Windows CrushFTP Server: CrushFTP, LLC 2003-01-01 AIX 10.2.0 [5] 2022-04-05 Proprietary [b] BSD Cygwin Linux HP-UX Java macOS Solaris Windows Dropbear ...
As of 2005, OpenSSH was the single most popular SSH implementation, being the default version in a large number of operating system distributions. OSSH meanwhile has become obsolete. [30] OpenSSH continues to be maintained and supports the SSH-2 protocol, having expunged SSH-1 support from the codebase in the OpenSSH 7.6 release.
The Software Updater cannot uninstall updates, although this can be accomplished by other package managers such as Ubuntu Software Center and more technically advanced ones such as Synaptic. In Ubuntu, the Software Updater can update the operating system to new versions which are released every six months for standard releases or every two ...
Linux HP-UX iOS Maemo macOS Solaris OpenSSH [b] The OpenBSD project 1999-12-01 [c] AIX 9.9 [6] 2024-09-19 BSD: Android BSD Cygwin Linux HP-UX iOS Maemo OpenVMS macOS Solaris Windows z/OS PuTTY: Simon Tatham: 1999-01-22 BSD 0.83 [7] 2025-02-08 MIT: Linux macOS Solaris Windows SecureCRT: VanDyke Software 1998–06 Linux 9.3.1 [8] 2022-12-06 ...
In February 2024, a malicious backdoor was introduced to the Linux build of the xz utility within the liblzma library in versions 5.6.0 and 5.6.1 by an account using the name "Jia Tan". [ b ] [ 4 ] The backdoor gives an attacker who possesses a specific Ed448 private key remote code execution through OpenSSH on the affected Linux system.