A Unix Utility You Should Know About: Netcat

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February 17, 2009, 20:05

Used netcat as part of a bigger pipe to "mirror traffic" over from a simple box that only had tcpdump to a fancier box where it can be analyzed with ethereal/tethereal:

Command 1:
nc -l -p 6666 | tethereal -V -i -

Command 2:
ssh -R 6666:127.0.0.1:6666 remotemachine "tcpdump -l -p -s 0 port not 22 -w - | nc localhost 6666"

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