Disable FirewallD and use iptables in RHEL 7 and CentOS 7

If you want to use iptables on CentOS 7 and RHEL 7 instead of firewallD Please follow,

systemctl mask firewalld

systemctl stop firewalld

yum -y install iptables-services

systemctl enable iptables

Ref: http://www.tejasbarot.com/2014/08/02/rhel-7-centos-7-disable-firewalld-and-use-iptables/#axzz3keP3fIkw