Add the webmin official repository:
Edit file /etc/apt/sources.list,
sudo vi /etc/apt/sources.list
Add the following lines:
deb http://download.webmin.com/download/repository sarge contrib
deb http://webmin.mirror.somersettechsolutions.co.uk/repository sarge contrib
Add the GPG key:
sudo wget http://www.webmin.com/jcameron-key.asc
sudo apt-key add jcameron-key.asc
Update the sources list:
sudo apt-get update
Install webmin using the following command:
sudo apt-get install webmin
Allow the webmin default port “10000” via firewall, if you want to access the webmin console from a remote system.
sudo ufw allow 10000
Open up your browser and navigate to the URL https://ip-address:10000/. The following screen should appear. Enter the user name and password to log in to webmin console.