SSH

SSH or secure shell, is an encrypted remote connection tool

My key randomart image is (on azag):

+--[ED25519 256]--+
|                 |
|         .       |
|        o +      |
|       . * . .   |
|    . . S o *    |
|  E. .   o @ +   |
| =.=      % * o  |
|  @..    * ooO. .|
|  o*.   o...o=*=+|
+----[SHA256]-----+

Installation

One first has to setup the keys on the client and server. See, e.g., [1].