WinPcap is the first successful port of libpcap (originally developed for Unix-like operating systems) for Windows. Features of WinPcap: -WinPcap is released under the BSD open source licence. -It implements all of the classic optimizations described in the packet capture literature (e.g., kernel-level filtering and buffering, context switch mitigation, partial packet copy), plus some original ones, like JIT filter compilation and kernel-level statistic processing.

• It allows applications to capture and transmit network packets bypassing the protocol stack. -It has additional useful features, including kernel-level packet filtering, a network statistics engine and support for remote packet capture.