centos 7 关闭 firewall、iptables详解程序员

systemctl是CentOS7的服务管理工具中主要的工具，它融合之前service和chkconfig的功能于一体。

1、关闭firewall

systemctl status firewalld.service  
systemctl stop firewalld.service  
systemctl disable firewalld.service  
firewall-cmd --state

2、关闭iptables

yum install iptables-services 
systemctl status iptables.service  
systemctl stop iptables.service  
systemctl disable iptables.service 
cd /etc/sysconfig 
mv /etc/sysconfig/iptables  /etc/sysconfig/iptables.bak 
mv /etc/sysconfig/iptables-config /etc/sysconfig/iptables-config.bak 
touch /etc/sysconfig/iptables 
touch /etc/sysconfig/iptables-config 
reboot