NetFilter SDK v1.4.0.0 + ProtocolFilters v1.0.8.1 Full Sources

NetFilter SDK is a framework for transparent filtering the data packets transmitted via network. This is a high performance proxy-less solution, compatible with all antiviruses/firewalls/other network filters. It perfectly suits for developing the content filters, basic application level firewalls, traffic analyzers/shapers, other software that requires viewing and modifying TCP/UDP traffic on Windows.

SDK consists of kernel mode and user mode parts. TDI level kernel driver works on the top of TCP/IP stack and filters TCP and UDP protocols. It has a simple user level API, which can be used from C/C++/.NET/Delphi code.

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ProtocolFilters is a library that classifies data packets provided on input, detects high-level protocols and allows filtering the classified objects. It is designed to work with NetFilter SDK API, but also can be used for parsing and filtering the network packets obtained from other sources. The library has a simple API, which can be used from C/C++/.NET/Delphi code.