Fyodor, I would like to have your point of vue on SinFP tool

[GomoR <nmap-hackers () gomor org>]

First, if you feel this message has nothing to do here, I understand. Feel
free to redirect to /dev/null. 

SinFP is a new approach to OS fingerprinting, which bypasses limitations
that nmap has. 

Nmap approaches to fingerprinting as shown to be efficient for years.
Nowadays, with the omni-presence of stateful filtering devices, PAT/NAT
configurations and emerging packet normalization, its approach to OS
fingerprinting is becoming to be obsolete. 

SinFP uses the aforementioned limitations as a basis for tests to be
obsolutely avoided in used frames to identify accurately the remote
operating system. That is, it only requires one open TCP port, sends only
fully standard TCP packets, and limits the number of tests to 2 or 3 (with
only 1 test giving the OS reliably in most cases). 

Features list:
 - full OS fingerprinting suite, built as a Perl module
 - active fingerprinting
 - passive fingerprinting (with signature matching made against active ones)
 - works the same over IPv4 and IPv6 (yes, IPv6 fingerprinting)
 - online mode
 - offline mode (especially useful when you have a pcap file)
 - heuristic matching algorithm to avoid the need to write new signature for
  a target stack which has some TCP option deactivated, or changed window
  size, for example 

To know more: http://www.gomor.org/sinfp .
Or simply download and try: http://www.gomor.org/files/SinFP-1.01-3.tar.gz . 

 --
 ^  ___  ___             http://www.GomoR.org/          <-+
 | / __ |__/          Systems & Security Engineer         |
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