In most of the Linux distributions, SSH comes installed & we can access those servers using ssh command.
But with Ubuntu Desktop—and Ubuntu-based distros—this is not the case. Though we have an ssh client available on Ubuntu, it’s the ssh server that we need to install on Ubuntu.
It means we can access other servers from Ubuntu using ssh but other machines will not be able to access our Ubuntu systems.
It’s easy to set SSH server up on Ubuntu. Watch the video here or access complete web tutorial at LinuxTechLab.com