This article assumes you have a freshly installed Ubuntu Server 16.04 instance and that your require some secure configurations and set up. In this article, you will increase the security and usability of your server and help give you a more solid foundation for subsequent actions.
Step 1: Install Openssh-Server
To login to your server (remotely via putty or some other ssh terminal client), you would need to have installed openssh server – if not, you can login directly to the console of the server, run the following command:
$ sudo apt-get install openssh-server