How to install webmin on ubuntu 12.04 - arrivu/beacon GitHub Wiki
open terminal install the following packages
sudo apt-get install perl libnet-ssleay-perl openssl libauthen-pam-perl libpam-runtime libio-pty-perl apt-show-versions python
###download webmin deb package using the following command
wget http://prdownloads.sourceforge.net/webadmin/webmin_1.580_all.deb
install downloaded package using following command
sudo dpkg -i webmin_1.580_all.deb
Login
https://ipaddress:10000
-Webmin will allow any user who has this sudo capability to login with full root privileges.