Disabling firewalld & Using the iptables service on CentOS7

#Disabling firewalld
 $ systemctl disable firewalld
 $ systemctl stop firewalld

#Using the iptables service
 $ yum -y update
 $ yum install iptables-services
 $ systemctl start iptables
 $ systemctl start ip6tables
 $ ystemctl enable iptables
 $ systemctl enable ip6tables

Finished.

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