Get ssh working

Installed JuiceSSH client on Samsung phone. Following the reco from here.

On Ubuntu box needed to install openssh-server:

sudo apt-get install openssh-server

And net-tools also did not come pre-installed:

sudo apt install net-tools

Once that is in place, check the IP address like so:

ifconfig

On the Windos laptop I already had Putty installed.

Just to be sure, I added some security measures, following this guide.

The secret key I generated on the client (windows laptop) using Puttygen as explained here https://www.u.tsukuba.ac.jp/en-puttygen-keypair/.

Next step will be to configure the firewall for external access.