NBTscan is a program for scanning IP networks for NetBIOS name 
information. It sends NetBIOS status query to each address in supplied
range and lists received information in human readable form. For each 
responded host it lists IP address, NetBIOS computer name, logged-in 
user name and MAC address.

NBTscan produces a report like that: 

IP address     NetBIOS Name  Server    User           MAC address
-----------------------------------------------------------------------
192.168.1.2    MYCOMPUTER              JDOE           00-a0-c9-12-34-56
192.168.1.5    WIN98COMP     <server>  RROE           00-a0-c9-78-90-00
192.168.1.123  DPTSERVER     <server>  ADMINISTRATOR  08-00-09-12-34-56

NBTscan is very fast and can be used to quickly scan large networks.

Possible applications of NBTscan include scanning for Windows machines
that are sharing files and folders, finding which user is logged on
on to which machine, which IP address belongs to which user and so
on.

The nbtscan homepage is located at:

	http://www.inetcat.org/software/nbtscan.html

Cryptographic signatures and checksums may be provided by 
the developers at the URL(s) above.  Wiretapped recommends
that users check these before use of the software/information.