===== Initial configuration =====

==== add users ====

  adduser <username>
  vim /etc/group

If necessary, add permissions to the respective user
  visudo

==== change hostname ====

  hostname <newname>

==== install bandwith monitor ====

  yum -y install vnstat

Run the following command to establish the database:
  vnstat -u -i eth0

Then enter the same command into the crontab to be executed every hour:
  crontab -e
  0 * * * * root vnstat -u -i eth0

Check daily, weekly or monthly bandwidth usage with vnstat -d, vnstat -w or vnstat -m, e.g.
  vnstat -m

A web frontend can be found at [[http://www.sqweek.com/sqweek/index.php?p=1]]