The nmap tool provides the ability to scan for hosts across your network.

nmap工具提供了在整个网络上扫描主机的功能。

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You can see an example of this in Listing 4, where you are comparing the output of two executions of nmap on the same host.

您可以在清单4中看到相关的示例，其中对同一台主机两次执行nmap所得到的输出进行了比较。

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If you want to scan the raw data information that goes past on the network, you need to use a tool other than nmap, which only scans, hosts, and ports.

如果您希望扫描经过网络传输的原始数据信息，那么您需要使用一种其他工具，而不是nmap，因为它只能扫描主机和端口。

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