防火墙操作
1、开启防火墙
systemctl start firewalld
2、重启防火墙
systemctl restart firewalld
3、关闭防火墙
systemctl stop firewalld
4、查看开放端口
firewall-cmd --list-port
5、开放某个端口
firewall-cmd --add-port=8081/tcp --parmanent
firewall-cmd reload
6、
标签：firewall,cmd,防火墙,firewalld,--,systemctl,linux,操作 From： https://www.cnblogs.com/aiyumo/p/17815634.html