centos查询端口是不是开放的 firewall-cmd –permanent –query-port=8080/tcp
添加对外开放端口 firewall-cmd –permanent –add-port=8080/tcp
重启防火墙 firewall-cmd –reload 查看网络端口情况 netstat -ntlp
关闭防火墙 //临时关闭 systemctl stop firewalld //禁止开机启动 systemctl disable firewalld
