开放端口
永久的开放需要的端口
sudo firewall-cmd --zone=public --add-port=3000/tcp --permanent
sudo firewall-cmd --reload
之后检查新的防火墙规则
firewall-cmd --list-all
关闭防火墙
systemctl disable firewalld
systemctl stop firewalld
systemctl status firewalld
开启防火墙
systemctl enable firewalld
systemctl start firewalld
systemctl status firewalld
临时关闭防火墙,重启后会重新自动打开
systemctl restart firewalld
检查防火墙状态
firewall-cmd --state
firewall-cmd --list-all
