Removing Firewalld and returning to iptables

Firewalld may not be to everyone's liking and you may prefer iptables. So, on a final note, if you ever find yourself in a situation where you do not want to use Firewalld, you can return to iptables easily.

To begin with, you should disable Firewalld like this:

# systemctl disable firewalld
# systemctl stop firewalld

You should then install and configure iptables by typing:

# yum install iptables-services
# touch /etc/sysconfig/iptables
# touch /etc/sysconfig/ip6tables

Now, start the iptables service with the following commands:

# systemctl start iptables
# systemctl start ip6tables
# systemctl enable iptables
# systemctl enable ip6tables

From this point onwards, you now have iptables as your firewall service of choice. However, just before you go, it is probably a good idea to reboot your server in order for the kernel to account for the new configuration.

To do this, type:

# reboot