centos7 防火墙简单使用firewall

firewall-cmd --stat

firewall-cmd --reload

增加规则

firewall-cmd --zone=public --add-port=3306/tcp --permanent
#centos7启动防火墙
systemctl start firewalld.service
#centos7停止防火墙/关闭防火墙
systemctl stop firewalld.service
#centos7重启防火墙
systemctl restart firewalld.service

#设置开机启用防火墙
systemctl enable firewalld.service
#设置开机不启动防火墙
systemctl disable firewalld.service

#centos7查看防火墙所有信息
firewall-cmd --list-all
#centos7查看防火墙开放的端口信息
firewall-cmd --list-ports

增加规则
firewall-cmd --zone=public --add-port=8080/tcp --permanent
firewall-cmd --zone=public --add-port=8090/tcp --permanent
firewall-cmd --reload
firewall-cmd --list-ports

原文地址：https://www.cnblogs.com/zhangyy3/p/12136027.html