How to Setup Web GUI Management For Ubuntu - Webmin Install on Ubuntu with SSL

 Introduction 

 Webmin is a web-based system administration tool for Unix-like systems.

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How to Install Webmin

 Let's get started with the Webmin installation!

• open terminal on your server /or/ login via SSH

Install Webmin

To install Webmin via apt-get, you must add the Webmin repository to your sources.list file first
Code

sudo nano /etc/apt/sources.list

Now add This to  source.list  file and save it by pressing "Ctrl + X" and then "Y" and then "Enter"
Code
deb http://download.webmin.com/download/repository sarge contrib
deb http://webmin.mirror.somersettechsolutions.co.uk/repository sarge contrib

Now add the Webmin GPG key to apt, so the source repository you added will be trusted
Code 
wget -q http://www.webmin.com/jcameron-key.asc -O- | sudo apt-key add -

You must update apt-get's package lists Before installing Webmin
Code
sudo apt-get update

Now run this apt-get command to install Webmin
Code
sudo apt-get install webmin

Enter Y to confirm the installation.

Log in to Webmin

Open You Web Browser And Type

https://server-IP-address:10000

You will be prompted with a warning that SSl certificate is not trusted Because the certficate is automatically generated by the webmin and this SSL certificate was not issued by a certificate authority that why its prompt  SSl certificate is not trusted.