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scanning windows networks? Sometimes it happens...
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NBTscan version 1.5.1 Copyright (C) 1999-2003 Alla Bezroutchko 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 (such as Ethernet). See http://www.inetcat.org/software/nbtscan.html for NBTscan homepage. LICENSE. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program (in a file called COPYING); if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. INSTALLATION. NBTscan compiles and runs on Unix and Windows. I have tested it on Windows NT 4.0, Windows 2000, FreeBSD 4.3, OpenBSD 2.8 and RedHat Linux 7.1. It should also compile and run on Solaris and other Linuxes as well. Steve Coleman <Steve.Coleman@jhuapl.edu> ported NBTscan to Solaris, HP-UX and OSF/1 and fixed several bugs. He reports that NBTscan also runs on IRIX/SGI with minor problems. Mohammad A. Haque <firstname.lastname@example.org> ported nbtscan to Darwin. Windows: To compile this under Windows you will need Cygwin. You can Download and install Cygwin from http://sources.redhat.com/cygwin/ Start Cygwin shell and proceed from there as in Unix installation Unix: Do ./configure make make install That's all. RUNNING. Usage: nbtscan [-v] [-d] [-e] [-l] [-t timeout] [-b bandwidth] [-r] [-q] [-s separator] [-m retransmits] (-f filename)|(<scan_range>) -v verbose output. Print all names received from each host -d dump packets. Print whole packet contents. -e Format output in /etc/hosts format. -l Format output in lmhosts format. Cannot be used with -v, -s or -h options. -t timeout wait timeout imilliseconds for response. Default 1. -b bandwidth Output throttling. Slow down output so that it uses no more that bandwidth bps. Useful on slow links, so that ougoing queries don't get dropped. -r use local port 137 for scans. Win95 boxes respond to this only. You need to be root to use this option on Unix. -q Suppress banners and error messages, -s separator Script-friendly output. Don't print column and record headers, separate fields with separator. -h Print human-readable names for services. Can only be used with -v option. -m retransmits Number of retransmits. Default 0. -f filename Take IP addresses to scan from file filename -f - makes nbtscan take IP addresses from stdin. <scan_range> what to scan. Can either be single IP like 192.168.1.1 or range of addresses in one of two forms: xxx.xxx.xxx.xxx/xx or xxx.xxx.xxx.xxx-xxx. Examples: nbtscan -r 192.168.1.0/24 Scans the whole C-class network. nbtscan 192.168.1.25-137 Scans a range from 192.168.1.25 to 192.168.1.137 nbtscan -v -s : 192.168.1.0/24 Scans C-class network. Prints results in script-friendly format using colon as field separator. Produces output like that: 192.168.0.1:NT_SERVER:00U 192.168.0.1:MY_DOMAIN:00G 192.168.0.1:ADMINISTRATOR:03U 192.168.0.2:OTHER_BOX:00U ... nbtscan -f iplist Scans IP addresses specified in file iplist. BUGS/LIMITATIONS Windows version has a certain limitation: you cannot scan Win95 hosts with it because Windows 95 always sends responses to name queries to port 137, and you cannot bind to port 137 under Windows (it is already taken by Windows itself). When talking to Samba boxes nbtscan always reports the MAC address being 00-00-00-00-00-00. This is because Samba sends that as MAC address. Nbtscan just displays what it gets. Report bugs to email@example.com (that's me). I cannot promise to do anything but I might well want fix it. Remember: no warranty.