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NMBLOOKUP(1)									     NMBLOOKUP(1)

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

       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

       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  par-
       ticular IP broadcast area or to a particular machine. All queries are done over UDP.

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

       -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)  NetBIOS  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 serious 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 setup 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  communi-
	      cate 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.

       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.

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

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

       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 con-
       verted 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)
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