NMBLOOKUP(1)															      NMBLOOKUP(1)

NAME

       nmblookup - NetBIOS over TCP/IP client used to lookup NetBIOS  names

SYNOPSIS

       nmblookup  [ -f ]  [ -M ]  [ -R ]  [ -S ]  [ -r ]  [ -A ]  [ -h ]  [ -B <broadcast address> ]  [ -U <unicast address> ]	[ -d <debug level>
       ]  [ -s <smb config file> ]  [ -i <NetBIOS scope> ]  [ -T ]  name

DESCRIPTION

       This tool is part of the  Samba suite.

       nmblookup is used to query NetBIOS names and map them to IP addresses in a network using NetBIOS over TCP/IP queries. The options allow the
       name queries to be directed at a particular IP broadcast area or to a particular machine. All queries are done over UDP.

OPTIONS

       -f     Causes  nmblookup to print out the flags in the NMB packet headers. These flags will print out as strings like Authoritative, Recur-
	      sion_Desired, Recursion_available, etc.

       -M     Searches for a master browser by looking up the NetBIOS name name with a type of 0x1d. If  name is "-" then it does a lookup on  the
	      special name __MSBROWSE__.

       -R     Set  the recursion desired bit in the packet to do a recursive lookup. This is used when sending a name query to a machine running a
	      WINS server and the user wishes to query the names in the WINS server. If this bit is unset the normal (broadcast  responding)  Net-
	      BIOS processing code on a machine is used instead. See rfc1001, rfc1002 for details.

       -S     Once  the  name  query has returned an IP address then do a node status query as well. A node status query returns the NetBIOS names
	      registered by a host.

       -r     Try and bind to UDP port 137 to send and receive UDP datagrams. The reason for this option is a bug in Windows 95 where  it  ignores
	      the  source  port  of  the requesting packet and only replies to UDP port 137. Unfortunately, on most UNIX systems root privilege is
	      needed to bind to this port, and in addition, if the nmbd(8) daemon is running on this machine it also binds to this port.

       -A     Interpret name as an IP Address and do a node status query on this address.

       -h     Print a help (usage) message.

       -B <broadcast address>
	      Send the query to the given broadcast address. Without this option the default behavior of nmblookup is to send  the  query  to  the
	      broadcast address of the network interfaces as either auto-detected or defined in the interfaces
	       parameter of the smb.conf (5) file.

       -U <unicast address>
	      Do  a  unicast  query  to the specified address or host unicast address. This option (along with the -R option) is needed to query a
	      WINS server.

       -d <debuglevel>
	      debuglevel is an integer from 0 to 10.

	      The default value if this parameter is not specified is zero.

	      The higher this value, the more detail will be logged about the activities of nmblookup. At level 0, only critical errors and  seri-
	      ous warnings will be logged.

	      Levels above 1 will generate considerable amounts of log data, and should only be used when investigating a problem.  Levels above 3
	      are designed for use only by developers and generate HUGE amounts of data, most of which is extremely cryptic.

	      Note that specifying this parameter here will override the  log level parameter in the  smb.conf(5) file.

       -s <smb.conf>
	      This parameter specifies the pathname to the Samba configuration file,  smb.conf(5) This file controls all aspects of the Samba set-
	      up on the machine.

       -i <scope>
	      This  specifies a NetBIOS scope that nmblookup will use to communicate with when generating NetBIOS names. For details on the use of
	      NetBIOS scopes, see rfc1001.txt and rfc1002.txt. NetBIOS scopes are very rarely used, only set this parameter if you are the  system
	      administrator in charge of all the NetBIOS systems you communicate with.

       -T     This  causes  any  IP addresses found in the lookup to be looked up via a reverse DNS lookup into a DNS name, and printed out before
	      each

	      IP address .... NetBIOS name

	      pair that is the normal output.

       name   This is the NetBIOS name being queried. Depending upon the previous options this may be a NetBIOS name or IP address.  If a  NetBIOS
	      name then the different name types may be specified by appending '#<type>' to the name. This name may also be '*', which will return
	      all registered names within a broadcast area.

EXAMPLES

       nmblookup can be used to query a WINS server (in the same way nslookup is used to query DNS servers). To query  a  WINS	server,  nmblookup
       must be called like this:

       nmblookup -U server -R 'name'

       For example, running :

       nmblookup -U samba.org -R 'IRIX#1B'

       would query the WINS server samba.org for the domain master browser (1B name type) for the IRIX workgroup.

VERSION

       This man page is correct for version 2.2 of the Samba suite.

SEE ALSO

       nmbd(8) samba(7) and smb.conf(5)

AUTHOR

       The  original  Samba  software  and  related utilities were created by Andrew Tridgell. Samba is now developed by the Samba Team as an Open
       Source project similar to the way the Linux kernel is developed.

       The original Samba man pages were written by Karl Auer.	The man page sources were converted to YODL format  (another  excellent  piece	of
       Open  Source  software,	available  at ftp://ftp.icce.rug.nl/pub/unix/ <URL:ftp://ftp.icce.rug.nl/pub/unix/>) and updated for the Samba 2.0
       release by Jeremy Allison. The conversion to DocBook for Samba 2.2 was done by Gerald Carter

								 19 November 2002						      NMBLOOKUP(1)