tcpflow

Demultiplexes and displays TCP/IP packet flows for network analysis

brewmacoslinux

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TCP/IP packet demultiplexer

tcpflow

Capture all TCP flows on the default network interface$ tcpflow -c

Capture TCP flows on eth0 interface and write to output directory$ tcpflow -i eth0 -o output_dir

Capture HTTP traffic with specific port filtering$ sudo tcpflow -i en0 'port 80 or port 443'