NAME
nmblookup - NetBIOS over TCP/IP client used to lookup NetBIOS namesSYNOPSIS
nmblookup
[-M|--master-browser] [--recursion] [-S|--status] [-r|--root-port]
[-A|--lookup-by-ip] [-B|--broadcast=BROADCAST-ADDRESS]
[-U|--unicast=UNICAST-ADDRESS] [-T|--translate] [-f|--flags] [-?|--help]
[--usage] [-d|--debuglevel=DEBUGLEVEL] [--debug-stdout]
[--configfile=CONFIGFILE] [--option=name=value]
[-l|--log-basename=LOGFILEBASE] [--leak-report] [--leak-report-full]
[-R|--name-resolve=NAME-RESOLVE-ORDER] [-O|--socket-options=SOCKETOPTIONS]
[-m|--max-protocol=MAXPROTOCOL] [-n|--netbiosname=NETBIOSNAME]
[--netbios-scope=SCOPE] [-W|--workgroup=WORKGROUP] [--realm=REALM]
{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 --
-.
--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.
-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.
-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.
-d|--debuglevel=DEBUGLEVEL
level is an integer from 0 to 10. The
default value if this parameter is not specified is 1 for client applications.
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 /etc/samba/smb.conf file.
--debug-stdout
This will redirect debug output to STDOUT. By
default all clients are logging to STDERR.
--configfile=<configuration file>
The file specified contains the configuration
details required by the client. The information in this file can be general
for client and server or only provide client specific like options such as
client smb encrypt. See /etc/samba/smb.conf for more information. The
default configuration file name is determined at compile time.
--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. If a name or a value includes a space, wrap whole
--option=name=value into quotes.
-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.
--leak-report
Enable talloc leak reporting on exit.
--leak-report-full
Enable full talloc leak reporting on
exit.
-V|--version
Prints the program version number.
-R|--name-resolve=NAME-RESOLVE-ORDER
This option is used to determine what naming
services and in what order to resolve host names to IP addresses. The option
takes a space-separated string of different name resolution options. The best
ist to wrap the whole --name-resolve=NAME-RESOLVE-ORDER into quotes.
The options are: "lmhosts", "host", "wins" and
"bcast". They cause names to be resolved as follows:
If this parameter is not set then the name resolve order defined in the
/etc/samba/smb.conf file parameter ( name resolve order) will be used.
The default order is lmhosts, host, wins, bcast. Without this parameter or any
entry in the name resolve order parameter of the /etc/samba/smb.conf
file, the name resolution methods will be attempted in this order.
-O|--socket-options=SOCKETOPTIONS
•lmhosts: Lookup an IP address
in the Samba lmhosts file. If the line in lmhosts has no name type attached to
the NetBIOS name (see the lmhosts(5) for details) then any name type
matches for lookup.
•host: Do a standard host name
to IP address resolution, using the system /etc/hosts, NIS, or DNS lookups.
This method of name resolution is operating system dependent, for instance on
IRIX or Solaris this may be controlled by the /etc/nsswitch.conf file). Note
that this method is only used if the NetBIOS name type being queried is the
0x20 (server) name type, otherwise it is ignored.
•wins: Query a name with the IP
address listed in the wins server parameter. If no WINS server has been
specified this method will be ignored.
•bcast: Do a broadcast on each
of the known local interfaces listed in the interfaces parameter. This
is the least reliable of the name resolution methods as it depends on the
target host being on a locally connected subnet.
TCP socket options to set on the client
socket. See the socket options parameter in the /etc/samba/smb.conf manual
page for the list of valid options.
-m|--max-protocol=MAXPROTOCOL
The value of the parameter (a string) is the
highest protocol level that will be supported by the client.
Note that specifying this parameter here will override the client max
protocol parameter in the /etc/samba/smb.conf file.
-n|--netbiosname=NETBIOSNAME
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 /etc/samba/smb.conf file. However, a command line
setting will take precedence over settings in /etc/samba/smb.conf.
--netbios-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=WORKGROUP
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).
Note that specifying this parameter here will override the workgroup
parameter in the /etc/samba/smb.conf file.
-r|--realm=REALM
Set the realm for the domain.
Note that specifying this parameter here will override the realm
parameter in the /etc/samba/smb.conf file.
-?|--help
Print a summary of command line options.
--usage
Display brief usage message.
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 part of version 4.17.12-Debian 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.10/10/2023 | Samba 4.17.12-Debian |