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36 lines
905 B
Markdown
36 lines
905 B
Markdown
# tcpdump
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> Dump traffic on a network.
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> More information: <https://www.tcpdump.org>.
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- List available network interfaces:
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`tcpdump {{[-D|--list-interfaces]}}`
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- Capture the traffic of a specific interface:
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`sudo tcpdump {{[-i|--interface]}} {{eth0}}`
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- Capture all TCP traffic showing contents ([A]SCII) in console:
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`sudo tcpdump -A tcp`
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- Capture the traffic from or to a host:
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`sudo tcpdump host {{www.example.com}}`
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- Capture the traffic from a specific interface, source, destination and destination port:
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`sudo tcpdump {{[-i|--interface]}} {{eth0}} src {{192.168.1.1}} and dst {{192.168.1.2}} and dst port {{80}}`
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- Capture the traffic of a network:
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`sudo tcpdump net {{192.168.1.0/24}}`
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- Capture all traffic except traffic over port 22 and [w]rite to a dump file:
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`sudo tcpdump -w {{dumpfile.pcap}} port not {{22}}`
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- [r]ead from a given dump file:
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`tcpdump -r {{dumpfile.pcap}}`
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