关闭防火墙
查看防火墙状态
systemctl status firewalld.service临时关闭防火墙（重启失效）
systemctl stop firewalld.service永久关闭防火墙
systemctl disable firewalld.service
sudo systemctl enable firewalld，这种方式输入命令后要重启系统才会生效关闭防火墙
查看防火墙状态
systemctl status firewalld.service临时关闭防火墙（重启失效）
systemctl stop firewalld.service永久关闭防火墙
systemctl disable firewalld.service
sudo systemctl enable firewalld，这种方式输入命令后要重启系统才会生效