I was just configuring a box an used for the first time bastille linux (a project from Jay Beale) and I have to say it is a nice tool. It helps you configure a linux box in a safe and easy way. It is asks you a bunch of questions and explains you the impact of the choices.
Some people might think there box is 100% secure after running this but it isn't the case. You still have to do some additional steps (use hardening guides to help you) but is a nice and simple start :).