nmap 4.20 released

The very best network mapping tool is getting even better. This is the
latest release of nmap changelog.


# Nmap Changelog ($Id: CHANGELOG 4229 2006-12-08 03:02:09Z fyodor $)

o Updated nmap-mac-prefixes to reflect the latest OUI DB from the IEEE
(http://standards.ieee.org/regauth/oui/oui.txt) as of December 7.

4.20

o Integrated the latest OS fingerprint submissions. The 2nd
generation DB size has grown to 231 fingerprints. Please keep them
coming! New fingerprints include Mac OS X Server 10.5 pre-release,
NetBSD 4.99.4, Windows NT, and much more.

o Fixed a segmentation fault in the new OS detection system
which was reported by Craig Humphrey and Sebastian Garcia.

o Fixed a TCP sequence prediction difficulty indicator bug. The index
is supposed to go from 0 ("trivial joke") to about 260 (OpenBSD).
But some systems generated ISNs so insecurely that Nmap went
berserk and reported a negative difficulty index. This generally
only affects some printers, crappy cable modems, and Microsoft
Windows (old versions). Thanks to Sebastian Garcia for helping me
track down the problem.

Download nmap 4.20 at the creators site insecure.org.