CentOS 开放端口

1、先检查防火墙 查看防火墙状态 # systemctl status firewalld 关闭防火墙 # systemctl start firewalld 开启防火墙 # systemctl stop firewalld        显然看到running是开启状态  dead未开启 2、目标端口 查看8080端口  # firewall-cmd --query-port=8080/tcp

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