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Packet Capture with Pyshark and Elasticsearch

Editor: If you’ve been doing packet capture with Wireshark into flat files, take a break! This article shows how to do the same thing using Pyshark, a Python module, and Elasticsearch, a distributed search engine with an HTTP interface.

Network packet capture and analysis are commonly done with tools like tcpdump, snort, and Wireshark.

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These tools provide the capability to capture packets live from networks and store the captures in PCAP files for later analysis. A much better way to store packets is to index them in Elasticsearch where you can easily search for packets based on any combination of packet fields.

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Pyshark is a module that provides a wrapper API to tshark – the command line version of Wireshark – with which you build packet capture applications that take advantage of all the Wireshark protocol dissectors. Continue reading.

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