网络协议分析工具，用来分析网络协议的软件

捕捉网络上两台电脑之间所有的数据包，供网络管理员/入侵分析员做进一步流量分析和入侵检测。但对数据包分析的结果依赖于你的TCP/IP知识和经验，不同水平的人得出的结果可能会大相径庭。

更新日志：

Version 3.9.5, 06 Dec 06

Binaries are updated to the latest stable version of tcpdump, i.e. tcpdump 3.9.5. Please refer to the changelog of tcpdump for further details.
Binary built with WinPcap 4.0 beta 3. Use this version of Windump in conjunction with WinPcap 3.1 or later, available here.
Version 3.9.3, 05 Aug 05

Binaries are updated to the latest stable version of tcpdump, i.e. tcpdump 3.9.3
Binary built with WinPcap 3.1. Use this version of Windump in conjunction with WinPcap 3.1, available here.
Version 3.8.3 beta, 03 May 04

Binaries are updated to the latest CVS version of tcpdump in the 3.8.x branch
Binary built with WinPcap 3.1 beta2. Use this version of Windump in conjunction with the new version of WinPcap, available here.
Version 3.8 alpha, 09 Aug 02

Integration with tcpdump. The development source code of windump can now be found at www.tcpdump.org
Binaries are updated to the latest CVS version of tcpdump.org
Binary built with WinPcap 3.0 alpha. Use this version in conjunction with the new version of WinPcap.
Version 3.6.2, 28 Mar 02

Upgrade to tcpdump 3.6.2