Centos7防火牆那些事

1.關閉防火牆 systemctl stop firewalld 2.查看防火牆 systemctl status firewalld 3.打開防火牆 systemctl start firewalld 4.重啓防火牆 systemctl restart firewalld 5.開機自啓防火牆 systemctl enable firewalld 6.開機禁用防禦牆 systemctl disab

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