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NMBLOOKUP(1) | User Commands | NMBLOOKUP(1) |
NAME¶
nmblookup - NetBIOS over TCP/IP client used to lookup NetBIOS namesSYNOPSIS¶
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}
DESCRIPTION¶
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.OPTIONS¶
-M|--master-browserSearches 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 --
-.
-R|--recursion
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|--status
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|--root-port
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|--lookup-by-ip
Interpret name as an IP Address and do
a node status query on this address.
-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.
-W|--workgroup=domain
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 options.
-?|--help
Print a summary of command line options.
--usage
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.
-d|--debuglevel=level
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.
-V|--version
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.
-l|--log-basename=logdirectory
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.
--option=<name>=<value>
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.
-T|--translate
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.
-f|--flags
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.
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 3 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/) and updated for the Samba 2.0 release by Jeremy Allison. The conversion to DocBook for Samba 2.2 was done by Gerald Carter. The conversion to DocBook XML 4.2 for Samba 3.0 was done by Alexander Bokovoy.02/24/2015 | Samba 4.0 |