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tcpdump

Network packet sniffer

Ubuntu CentOS Debian SUSE Fedora RHEL macOS

Syntax

$tcpdump [options] [expression]

Optionen

-i

-w

-r

-n

-v

Examples

Examples

$tcpdump -i eth0

Examples

$tcpdump port 80

Examples

$tcpdump -w capture.pcap

Examples

$tcpdump -r capture.pcap

See also

wireshark tshark nmap

Warnings

Requires root privileges

Alternatives

wireshark tshark

Typical use cases

Analyze network traffic

Diagnose problems

Security monitoring

Note Capture network packets for analysis.

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