Low-level networking with Python

If for any reason you ever need to write low-level network protocols, and if you need direct access to the wire, a good starting pointer is on the Vaults of Parnassus Networking section. It contains pointers to some implementations of the libpcap library, the de-facto standard for low level network access. There is also a free port of libpcap for Windows, named WinPcap. The reason to use libpcap