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Development/LibpcapFileFormat. The libpcap file format is the main capture file format used in TcpDump/WinDump, Wireshark/TShark, snort, and many other networking tools.


Overview This file format is a very basic format to save captured network data. As the libpcap library became the "de facto" standard of network capturing on UN*X, it became the "common denominator" for network capture files in the open source world (there seems to be no such thing as a "common denominator" in the commercial network capture world at all). Libpcap, and the Windows port of libpcap, WinPcap, use the same file format. Although it's sometimes assumed that this file format is suitable for Ethernet networks only, it can serve many different network types, examples can be found at the Wireshark's Supported Capture Media page; all listed types are handled by the libpcap file format.

PCAP Next Generation Dump File Format. Status of this Memo This document is an Internet-Draft and is in full conformance with all provisions of Section 10 of RFC 2026.

PCAP Next Generation Dump File Format

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