It is good practice to keep iptables/firewall enabled. But configuring it is difficult, do you agree. Not any more 🙂
sudo yum install firewall-config
This will install a GUI application, which you can run with “Firewall” application in the dash or with “firewall-config” in terminal. It is pretty straight forward to use this tool, even if you don’t have much knowledge on Firewall/iptables.