Linux.com: CLI Magic: p0f

“This week’s CLI Magic will be a little different from the norm.
It’s still about magic happening at the command line, but this time
it’s magic from the dark side. P0f is a passive OS fingerprint tool
written by The Evil Twin, a.k.a. Michal Zalewski. Don’t worry, we
won’t be doing anything illegal, just making our own personal
version of Netcraft’s ‘What’s that site running?’ survey.

“In order to compile p0f, you’ll need to have libpcap installed
from source in order to be sure the required header files are


Related Story:
Techno Talk: Security: Passive Fingerprinting with p0f
(Jul 04,