Dump traffic on a network.
More information.
- List available network interfaces:
- Capture the traffic of a specific interface:
- Capture all TCP traffic showing contents (ASCII) in console:
- Capture the traffic from or to a host:
tcpdump host {www.example.com}
- Capture the traffic from a specific interface, source, destination and destination port:
tcpdump -i {eth0} src {192.168.1.1} and dst {192.168.1.2} and dst port {80}
- Capture the traffic of a network:
tcpdump net {192.168.1.0/24}
- Capture all traffic except traffic over port 22 and save to a dump file:
tcpdump -w {dumpfile.pcap} port not {22}
- Read from a given dump file:
tcpdump -r {dumpfile.pcap}
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