("TCP tõmmis")

olemus
käsurealiidesega paketianalüsaator vaba tarkvarana,
UNIXi-laadsetele süsteemidele
= a command-line network monitoring and data acquisition tool

ülevaateid
https://en.wikipedia.org/wiki/Tcpdump
https://www.giac.org/paper/gsec/3489/beginners-guide-tcpdump/105700
https://danielmiessler.com/study/tcpdump/
https://www.tcpdump.org/manpages/tcpdump.1.html