Centos7 – reversing to classic iptables

First of all we need to deactivate FirewallD

systemctl disable firewalld.service

Then we install the package called iptables-services

yum install iptables-services

edit /etc/sysconfig/iptables then start classic iptables and make it load on each reboot

systemctl start iptables.service
systemctl enable iptables

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