Installing a Firewall on CentOS

For dedicated server

[UltimateX]

Does anyone here know where I can find a good tutorial that shows how to install a firewall on a CentOS serevr? I've just purchased a server and wanted to know what kind of security features I'll need and how i'll be able to install them on the server.

[Frank_Rizzo]

For simplicity ensure Webmin is installed as this makes it easier for configuring all the rules.

I'm no expert on this myself but I had a new Centos server which was already configured for basic rules. Webmin made it easy to add / delete what I didn't need.