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NMBLOOKUP(1)			 User Commands			  NMBLOOKUP(1)

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

       nmblookup [-M|--master-browser] [-R|--recursion]	[-S|--status]
	[-r|--root-port] [-A|--lookup-by-ip]
	[-B|--broadcast	<broadcast address>] [-U|--unicast <unicast address>]
	[-d <debug level>] [-s <smb config file>] [-i <NetBIOS scope>]
	[-T|--translate] [-f|--flags] {name}

       This tool is part of the	samba(7) 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.

	   Searches for	a master browser by looking up the NetBIOS name	with a
	   type	of 0x1d. If
	    name is "-"	then it	does a lookup on the special name
	   __MSBROWSE__. Please	note that in order to use the name "-",	you
	   need	to make	sure "-" isn't parsed as an argument, e.g. use :
	   nmblookup -M	-- -.

	   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.

	   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.

	   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.

	   Interpret name as an	IP Address and do a node status	query on this

       -n|--netbiosname	<primary NetBIOS name>
	   This	option allows you to override the NetBIOS name that Samba uses
	   for itself. This is identical to setting the	netbios	name parameter
	   in the smb.conf file. However, a command line setting will take
	   precedence over settings in smb.conf.

       -i|--scope <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.

	   Set the SMB domain of the username. This overrides the default
	   domain which	is the domain defined in smb.conf. If the domain
	   specified is	the same as the	servers	NetBIOS	name, it causes	the
	   client to log on using the servers local SAM	(as opposed to the
	   Domain SAM).

       -O|--socket-options socket options
	   TCP socket options to set on	the client socket. See the socket
	   options parameter in	the smb.conf manual page for the list of valid

	   Print a summary of command line options.

	   Display brief usage message.

       -B|--broadcast <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 <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.

	   level is an integer from 0 to 10. The default value if this
	   parameter is	not specified is 0.

	   The higher this value, the more detail will be logged to the	log
	   files about the activities of the server. At	level 0, only critical
	   errors and serious warnings will be logged. Level 1 is a reasonable
	   level for day-to-day	running	- it generates a small amount of
	   information about operations	carried	out.

	   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 log data,	most of	which is extremely cryptic.

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

	   Prints the program version number.

       -s|--configfile=<configuration file>
	   The file specified contains the configuration details required by
	   the server. The information in this file includes server-specific
	   information such as what printcap file to use, as well as
	   descriptions	of all the services that the server is to provide. See
	   smb.conf for	more information. The default configuration file name
	   is determined at compile time.

	   Base	directory name for log/debug files. The	extension ".progname"
	   will	be appended (e.g. log.smbclient, log.smbd, etc...). The	log
	   file	is never removed by the	client.

	   Set the smb.conf(5) option "<name>" to value	"<value>" from the
	   command line. This overrides	compiled-in defaults and options read
	   from	the configuration file.

	   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

	   IP address .... NetBIOS name

	   pair	that is	the normal output.

	   Show	which flags apply to the name that has been looked up.
	   Possible answers are	zero or	more of: Response, Authoritative,
	   Truncated, Recursion_Desired, Recursion_Available, Broadcast.

	   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 -R 'IRIX#1B'

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

       This man	page is	part of	version	4.13.1 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.

Samba 4.13.1			  10/28/2020			  NMBLOOKUP(1)


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