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⬅️ Previous capture (2022-04-28)

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tshark

Packet analysis tool, CLI version of Wireshark.

More information.

• Monitor everything on localhost:

tshark

• Only capture packets matching a specific capture filter:

tshark -f '{udp port 53}'

• Only show packets matching a specific output filter:

tshark -Y '{http.request.method == "GET"}'

• Decode a TCP port using a specific protocol (e.g. HTTP):

tshark -d tcp.port=={8888},{http}

• Specify the format of captured output:

tshark -T {json|text|ps|…}

• Select specific fields to output:

tshark -T {fields|ek|json|pdml} -e {http.request.method} -e {ip.src}

• Write captured packet to a file:

tshark -w {path/to/file}

• Analyze packets from a file:

tshark -r {filename}.pcap

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