wireshark: wireshark (packet sniffer and protocol analyzer)
wireshark:
wireshark: Wireshark (aka Ethereal) is a free packet sniffer computer
wireshark: application.  It is used for network troubleshooting, analysis,
wireshark: software and communications, protocol development and education.
wireshark:
wireshark: Wireshark uses the cross-platform Qt widget toolkit. Its
wireshark: powerful features make it the tool of choice for network
wireshark: troubleshooting, protocol development, and education worldwide.
wireshark:
wireshark: https://www.wireshark.org