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Winpcap packet sniffer tutorial + example

This will show you how to to capture network packets using winpcap. No network programming or tcp/ip knowledge is required. The example program captures chat from a yahoo messenger chat room and places in a text box. I tried to make the example program very simple. I used vbpcap.dll functions library so we don't have to do low level winpcap programming. The tutorial explains everything of the example program and also shows how to analyze packets. I also included a way to sequential search a string for multiple substrings(very fast). This will be useful if you want to search for some particular string or bytes in your packet.

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