My question/s is/are: would it be safe for me to use iptables only and disable SELINUX? Is Zentyal formidable enough to use as a security solution for a small business network? And why does SELinux have to be such a pain in the neck???

In my opinion you should disable SELINUX at the moment and use iptables only (i have never had any issues with using iptables only) i have been doing that for sometime, to use SELINUX you really need to understand how it works.

--
˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙
'spɹɐƃǝɹ
ıʞnɾu pıʌɐp