1. 启动防火墙

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    systemctl start firewalld

  2. 查看状态

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    systemctl status firewalld

  3. 停止与禁用

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    systemctl stop firewalld 
    systemctl disable firewalld

  4. 查看所有打开的端口

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    firewall-cmd --zone=public --list-ports

  5. 开放端口

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    firewall-cmd --zone=public --add-port=80/tcp --permanent #开放80端口

    firewall-cmd --reload  #重新载入

  6. 查看

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    firewall-cmd --zone=public --query-port=80/tcp

  7. 删除

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    firewall-cmd --zone=public --remove-port=80/tcp --permanent