("Principles of Network Analysis Skills, Practice and Deep Analysis of Winpcap" links the well-known open source software library winpcap to explain the implementation principles and application methods of network analysis skills. It includes the kernel driver of the network analysis tool, the compilation and use of winpcap, the capture, transmission, kernel filtering and acceptance of data packets, as well as the calculation of network traffic and the analysis of network status, etc., and the author also revised the kernel-level source code. Solved an important function that the open source code itself did not finish - the core dump of the packet. Through the in-depth analysis of the author's system, readers can not only have a deep understanding of the structure, application and implementation mechanism of winpcap, but also quickly understand the implementation mechanism of the interaction between the operating system kernel and the user layer, and fully understand all aspects of network analysis. Ability to apply common sense to practical projects. Note: Be sure to use 2345 good compression software to decompress! ! Otherwise there may be problems! !)