抓包工具Ethereal （Wireshark）

EtherealThe world's most popular network protocol analyzer

http://www.ethereal.com/

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http://sourceforge.net/projects/wireshark/

Wireshark is a powerful network protocol analyzer developed by an international team of networking experts. It runs on UNIX, OS X and Windows. (Looking for Ethereal? You're in the right place. We switched names in May 2006 due to trademark issues.)

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winpcap(windows packet capture)是windows平台下一個免費，公用的網路訪問系統。開發winpcap這個項目的目的在於為win32應用程式提供訪問網路底層的能力。