CentOS 7 使用iptables防火墙

# 停止firewalld服务

systemctl stop firewalld

systemctl mask firewalld

# 安装iptables-services

yum install iptables-services

Enable the service at boot-time:

# 启动iptables服务

systemctl enable iptables

# 管理iptables

systemctl [stop|start|restart] iptables

# 保存规则

service iptables save 或者 /usr/libexec/iptables/iptables.init save

centos7不再使用iptables，而是使用firewalld

若不想使用firewalld，继续使用iptables，可以停掉firewalld，并且安装iptables-services包

systemctl stop firewalld

systemctl disable firewalld

yum install -y iptables-services

systemctl enable iptables

systemctl start iptables