This is a simplified object-oriented Python wrapper for libpcap - the current version, and the WinPcap port for Windows.

Example use:

>>> import pcap
>>> sniffer = pcap.pcap(name=None, promisc=True, immediate=True, timeout_ms=50)
>>> addr = lambda pkt, offset: '.'.join(str(ord(pkt[i])) for i in range(offset, offset + 4))
>>> for ts, pkt in sniffer:
...     print('%d\tSRC %-16s\tDST %-16s' % (ts, addr(pkt, sniffer.dloff + 12), addr(pkt, sniffer.dloff + 16)))

Windows notes

WinPcap has compatibility issues with Windows 10, therefore it’s recommended to use Npcap (Nmap’s packet sniffing library for Windows, based on the WinPcap/Libpcap libraries, but with improved speed, portability, security, and efficiency). Please enable WinPcap API-compatible mode during the library installation.


This package requires:

  • libpcap-dev
  • python-dev

To install run

pip install pypcap

Installation from sources

Please clone the sources and run:

python install

Note for Windows users: Please download the Npcap SDK, unpack the archive and put it into the sibling directory as wpdpack ( will discover it).

Sample procedure in PowerShell:

cd ..
wget -usebasicparsing -outfile
Expand-Archive -LiteralPath
mv npcap-sdk-0.1\npcap-sdk-0.1 wpdpack
cd pypcap
python install


Visit for help!

Indices and tables