How to use Secure SHell (SSH) Posted on May 7, 2021 by jonathan SSH (Secure SHell) is used in order to use one computer to control another computer. This can be done over insecure networks (like the Internet) because of the cryptography used to protect the data transferred between the computers involved. In this example, I use Parrot Security OS (a hacking-oriented operating system based on Debian Linux) as the computer that I physically touch and interact with. The other computer (which I remotely control) is my Raspberry Pi single-board computer (SBC), which I have already installed Ubuntu Server on. Ubuntu Server is another Debian-based Linux distro, but the “Server” part of its name means that it only comes with the command-line interface (CLI) and not a graphical user interface (GUI) which most people are used to. By the way, none of these links are affiliates. Feel free to try out substitutes (like a cloud server instead of a Raspberry Pi, Linux Mint instead of Parro