Linux命令

#查看防火墙状态命令
sudo systemctl status firewalld
#关闭和打开防火墙
sudo systemctl status firewalld  //临时关闭防火墙
sudo systemctl disable firewalld //永久性的关闭防火墙
sudo systemctl start firewalld   //临时开启防火墙
sudo systemctl enable firewalld  //永久性开启防火墙