RHEL7: Disable Firewalld and replace it with Iptables.

RHEL7: Disable Firewalld and replace it with Iptables.

If you don’t get used to Firewalld, you can still rely on Iptables by following the instructions below provided by the Fedora project.

Procedure

Install the Iptables package:

# yum install -y iptables-services
Disable the Firewalld service:

# systemctl mask firewalld
Activate the iptables and ip6tables services at boot:

# systemctl enable iptables
# systemctl enable ip6tables
Go to the /etc/sysconfig directory and define your rules in the iptables, ip6tables, iptables-config and ip6tables-config files.

Stop the Firewalld service:

# systemctl stop firewalld
Start the iptables and ip6tables service:

# systemctl start iptables
# systemctl start ip6tables
You can now run the system-config-firewall or the iptables commands without any problem.

Note:
*ip6tables for ipv6 we dont use ipv6 by default so please ignore ip6tables in the above procedure.