什么是 MAC 地址？

MAC 地址是制造商为网络硬件(如无线网卡或以太网网卡)分配的唯一代码。MAC 代表媒体访问控制，每个代码对应一个唯一的设备。

MAC 地址由六组两位字符组成，由冒号分隔。比如00:1B:44:11:3A:B7，就是一个 MAC 地址。

要标识网络硬件的 MAC 地址：

  1. Go to the Desktop and start typing Network.

  2. Click on Network to open the panel.

  3. Choose which device, Wi-Fi or Wired, from the left pane.

    The MAC address for the wired device will be displayed as the Hardware Address on the right.

    Click the settings button to see the MAC address for the wireless device displayed as the Hardware Address in the Details panel.

In practice, you may need to modify or “spoof” a MAC address. For example, some internet service providers may require that a specific MAC address be used to access their service. If the network card stops working, and you need to swap a new card in, the service won’t work anymore. In such cases, you would need to spoof the MAC address.