[CentOS] Disabling stock firewall and SELinux for ISPConfig

I have been reading a tutorial on configuring and securing a CentOS 6.2 machine:
http://www.howtoforge.com/perfect-server-centos-6.2-x86_64-with-apache2-ispconfig-3-p3

This tutorial bases the configuration on an application called
ISPConfig. I am not sure that I like the idea of disabling the stock
firewall and SELinux as the tutorial suggests, even with all the
troubles that SELinux has given me in the past. What do those wiser
than myself think about this?

For some background, I will be setting up a rather bland server for
serving a few websites. Thy will all be served via Apache, coded in
PHP. I am concerned about correctly configuring a safe firewall for
the system. So any advice particular to that would be much
appreciated.

Thank you!


Dotan Cohen