Linux centos7 防火墙设置

1.查看防火墙状态
systemctl list-unit-files|grep firewalld.service
或
systemctl status firewalld.service

2.开启
systemctl start firewalld.service

3.停止
systemctl stop firewalld.service

4.重启
systemctl restart firewalld.service

5.开机启动
systemctl enable firewalld.service

6.开机禁止启动
systemctl disable firewalld.service

7.查看开机是否自启
systemctl is-enabled firewalld.service;echo $?

8.列举出所有开机自启服务
systemctl list-unit-files|grep enabled

9.查看已经开放端口
firewall-cmd --list-ports

10.添加开放端口(重启防火墙才生效)
firewall-cmd --zone=public --add-port=80/tcp --permanent
--zone 作用域
--add--port 添加端口号
--permanent 永久生效 不用的话重启机器失效
11.重启防火墙
firewall-cmd --reload

12.防火墙运行状态
firewall-cmd --state