Install ssh by entering the following commands in the terminal:
sudo apt update sudo apt install ssh
Description:
secure shell client and server (metapackage)
This metapackage is a convenient way to install both the OpenSSH client and the OpenSSH server. It provides nothing in and of itself, so you may remove it if nothing depends on it.
Homepage: http://www.openssh.com/
Version: 1:7.6p1-4
Section: net