Sebelumnya sori, harusnya sebelum nulis cara bikin proxy server, tutorial ini di upload dlu. Ini adalah cara install webmin melalui internet langsung. Ini hasil copy paste dari

If you like to install and update Usermin via RPM, create the /etc/yum.repos.d/webmin.repo file containing :

name=Webmin Distribution Neutral

You should also fetch and install my GPG key with which the packages are signed, with the command :

rpm --import

You will now be able to install with the command :

yum install webmin

All dependencies should be resolved automatically.