p0f is a versatile passive OS fingerprinting and masquerade detection utility, to be used for evidence or information gathering on servers, firewalls, IDSes, and honeypots, for pen-testing, or just for the fun of it. It is a complete rewrite of p0f version 1 that used to be maintained by William Stearns.
Author: Michal Zalewski "The Evil Twin" <lcamtuf [at] coredump [dot] cx>
Maintainer: The T2 Project <t2 [at] t2-project [dot] org>
Remark: Does cross compile (as setup and patched in T2).
Build time (on reference hardware): 0% (relative to binutils)2
Installed size (on reference hardware): 0.29 MB, 13 files
Installed files (on reference hardware): n.a.
2) Compatible with Linux From Scratch's "Standard Build Unit" (SBU).