systemctl
systemctl unmask firewalld #执行命令，即可实现取消服务的锁定
systemctl mask firewalld # 下次需要锁定该服务时执行
systemctl start firewalld.service #启动防火墙
systemctl stop firewalld.service #停止防火墙
systemctl reloadt firewalld.service #重载配置
systemctl restart firewalld.service #重启服务
systemctl status firewalld.service #显示服务的状态
systemctl enable firewalld.service #在开机时启用服务
systemctl disable firewalld.service #在开机时禁用服务
systemctl systemctl unmask firewalld 
