tcpdump

Command-line packet analyzer
https://www.tcpdump.org/

Current versions
4.9.2
HEAD

tcpdump requires the following formulae to be installed:
openssl 1.0.2n SSL/TLS cryptography library
libpcap 1.8.1 Portable library for network traffic capture

Recent formula history

Viktor Szakats tcpdump: secure url(s)
Adam Shannon tcpdump 4.9.2
ilovezfs tcpdump 4.9.1
Mike McQuaid tcpdump: import homebrew/dupes into core.

Formula code at GitHub