SSH uses public-key cryptography to authenticate the remote computer and allow it to authenticate the user, if … See more

On Unix-like systems, the list of authorized public keys is typically stored in the home directory of the user that is allowed to log in remotely, in the file ~/.ssh/authorized_keys. This file is respected by SSH only if it is not writable by … See more

SSH is typically used to log into a remote computer's shell or command-line interface (CLI) and to execute commands on a remote server. It also supports mechanisms for tunneling, forwarding of TCP ports and X11 connection… See more

In 1995, Tatu Ylönen, a researcher at Helsinki University of Technology in Finland designed the first version of the protocol (now called SSH-1) prompted by a password-sniffing attack at his university network. … See more

SSH is a protocol that can be used for many applications across many platforms including most Unix variants (Linux, the BSDs including Apple's macOS, and Solaris), as well as Microsoft Windows. Some of the application… See more

The SSH protocol has a layered architecture with three separate components:
• The transport layer (RFC 4253) typically uses the Transmission Control Protocol (TCP) of … See more