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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 ...
Version Date Apache MINA SSHD Apache Software Foundation: 2009 AIX 2.9.0 [1] 2022-07-18 Apache-2.0: BSD 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 ...
CopSSH is an implementation of OpenSSH for Windows. CopSSH offers both SSH client and server functionality and can be used for remote administration of Windows systems. CopSSH contains DLLs from the Cygwin Linux environment and a version of OpenSSH compiled from Cygwin. An administration GUI is also provided as of version 4.0.0. [2]
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).
[2] According to OpenSSH developers in April 2019, SCP is outdated, inflexible and not readily fixed; they recommend the use of more modern protocols like SFTP and rsync for file transfer. [3] As of OpenSSH version 9.0, scp client therefore uses SFTP for file transfers by default instead of the legacy SCP/RCP protocol. [4]
The malicious code is known to be in 5.6.0 and 5.6.1 releases of the XZ Utils software package. The exploit remains dormant unless a specific third-party patch of the SSH server is used. Under the right circumstances this interference could potentially enable a malicious actor to break sshd authentication and gain unauthorized access to the ...
Version Date AbsoluteTelnet: Celestial Software (Brian Pence) 1996 Windows 11.24 [1] 2020-08-13 Proprietary: Bitvise SSH Client Bitvise Limited 2001 Windows 9.32 [2] [3] 2023-12-20 Proprietary: ConnectBot: Kenny Root Jeffrey Sharkey 2007-11 [a] Android 1.9.10 [4] 2023-12-21 Apache-2.0? ? Dropbear: Matt Johnston 2003-04-06 AIX 2024.86 [5] 2024 ...
Originally, with SSH protocol version 1 (now deprecated) only the RSA algorithm was supported. As of 2016, RSA is still considered strong, but the recommended key length has increased over time. The SSH protocol version 2 additionally introduced support for the DSA algorithm. DSA is now considered weak and was disabled in OpenSSH 7.0.