by Ken Task.
Suggest, on the CentOS 6.5 server, installing Webmin. http://www.webmin.com/
Has modules for all parts that make up a 'standard' Moodle instance ... Apache, MySQL, and PHP as well as an interface into firewall (iptables). It is updateable within itself and can be restricted to certain IP address access.
You can see screen shots and 'kick the tires' via demo system setup:
http://www.webmin.com/demo.html
'spirit of sharing', Ken