Show all data on the given interface and port

Capture TCP traffic for debugging and analysis.
More information: <https://manned.org/tcpflow>.
Trick copyright: tl;dr; <https://github.com/tldr-pages/tldr>

tcpflow -c -i {{eth0}} port {{80}}

click the source code to copy install tcpflow on any operating system with command-not-found.com