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The first LTS releases were supported for three years on the desktop and five years on the server; since Ubuntu 12.04 LTS, desktop support for LTS releases was increased to five years as well. [ 52 ] [ 53 ] [ 54 ] LTS releases get regular point releases with support for new hardware and integration of all the updates published in that series to ...
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.
Web-based SSH is the provision of Secure Shell (SSH) access through a web browser. SSH is a secure network protocol that is commonly used to remotely control servers, network devices, and other devices. With web-based SSH, users can access and manage these devices using a standard web browser, without the need to install any additional software.
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. [22]
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.
[20] [21] [19] New features of SSH-2 include the ability to run any number of shell sessions over a single SSH connection. [22] Due to SSH-2's superiority and popularity over SSH-1, some implementations such as libssh (v0.8.0+), [ 23 ] Lsh [ 24 ] and Dropbear [ 25 ] eventually supported only the SSH-2 protocol.
In June 2020, a benchmark with 173 tests on WSL 2 (20H2) with an AMD Ryzen Threadripper 3970X showed an average of 87% of the performance of native Ubuntu 20.04 LTS. In contrast, WSL 1 had only 70% of the performance of native Ubuntu. WSL 2 improves I/O performance, providing a near-native level. [49]
March 21, 2000 (): Bash 2.04 is released. The Korn shell is released as open source under the Common Public License. "The rest of the characters" in the POSIX Portable Character Set "are defined in the ISO/IEC 10646-1:2000 standard." They comprise the remainder of the characters on a U.S. qwerty keyboard from <space> to <tilde>. [39]