xprobe

What is Xprobe?                                                                                                  
Written and maintained by Fyodor Yarochkin and Ofir Arkin, Xprobe
(I & II) is an Active OS fingerprinting tools based on Ofir Arkin's
ICMP Usage In Scanning Research project.                                                            

Xprobe is an alternative to some tools which are heavily dependent
upon the usage of the TCP protocol for remote active operating system
fingerprinting.                                                          

Xprobe I combines various remote active operating system fingerprinting
methods using the ICMP protocol, which were discovered during the
"ICMP Usage in Scanning" research project, into a simple, fast, efficient
and a powerful way to detect an underlying operating system a targeted
host is using.                                                         

Xprobe2 is an active operating system fingerprinting tool with a different
approach to operating system fingerprinting. Xprobe2 rely on fuzzy signature
matching, probabilistic guesses, multiple matches simultaneously, and a
signature database.

The xprobe homepage is located at:

	http://www.sys-security.com/html/projects/X.html

Cryptographic checksums may be available from the homepage.
Wiretapped recommends that users check signatures and 
checksums where provided by the developers at the URLs above.