linux防火墙基本操作

      # firewall-cmd --state

      # systemctl status firewalld.service

      # systemctl stop firewalld.service

      # systemctl start firewalld.service

      # systemctl restart firewalld.service

      # systemctl enable firewalld.service

      #systemctl disable firewalld.service

      # systemctl is-enabled firewalld.service;echo $?

      # systemctl list-unit-files|grep enabled

      #systemctl status 服务名称