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        <title>Tcpdump - 标签 - LoveIt</title>
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    <title>tcpdump 命令使用详细总结</title>
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    <author>zhengqijun0121@qq.com (zhengqijun0121)</author>
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    <description><![CDATA[<h1 id="tcpdump-命令使用详细总结">tcpdump 命令使用详细总结</h1>
<p><code>tcpdump</code> 是类Unix/Linux系统下<strong>开源、轻量、高性能的命令行网络数据包捕获与分析工具</strong>，基于libpcap库实现，是网络故障排查、协议分析、安全审计、流量监控的核心工具。<strong>必须以root/sudo权限运行</strong>才能操作网卡捕获流量，抓包结果可直接在终端分析，也可保存为pcap文件供Wireshark等工具深度解析。</p>]]></description>
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