systemctl status firewalld
firewall-cmd --state
service firewalld start
service firewalld stop
service firewalld restart
firewall-cmd --list-all
firewall-cmd --query-port=[端口]/tcp
firewall-cmd --permanent --add-port=[端口]/tcp
firewall-cmd --permanent --remove-port=[端口]/tcp
firewall-cmd --reload
PS:报错 ModuleNotFoundError: No module named 'gi'
执行命令:sudo vim /usr/bin/firewall-cmd
,打开文件修改第一行python为python2
引用于:centos7 firewall-cmd 命令报错 ModuleNotFoundError: No module named 'gi'python