xprobe - 0.3-5 main

Xprobe2 allows you to determine what operating system is running on a
remote host. It sends several packets to a host and analyses the
returned answers.
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Xprobe2's functionality is comparable to the OS fingerprinting feature
in nmap (written by a different Fyodor):
- Outputs its level of confidence about the OS on the remote host.
- Remains usable even if intermediate systems (routers, firewalls) make
slight modifications to the packets.
- Can list the type of intermediate device (e.g. "Linux IP masquerading").
- Modular architecture allows new fingerprinting tests and new OS
signatures to be added.