342 lines
12 KiB
Groff
342 lines
12 KiB
Groff
'\" t
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.\" Title: nmblookup
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.\" Author: [see the "AUTHOR" section]
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.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
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.\" Date: 08/09/2022
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.\" Manual: User Commands
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.\" Source: Samba 4.16.4
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.\" Language: English
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.\"
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.TH "NMBLOOKUP" "1" "08/09/2022" "Samba 4\&.16\&.4" "User Commands"
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.\" -----------------------------------------------------------------
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.\" * Define some portability stuff
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.\" -----------------------------------------------------------------
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.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.\" http://bugs.debian.org/507673
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.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
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.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.ie \n(.g .ds Aq \(aq
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.el .ds Aq '
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.\" -----------------------------------------------------------------
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.\" * set default formatting
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.\" -----------------------------------------------------------------
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.\" disable hyphenation
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.nh
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.\" disable justification (adjust text to left margin only)
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.ad l
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.\" -----------------------------------------------------------------
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.\" * MAIN CONTENT STARTS HERE *
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.\" -----------------------------------------------------------------
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.SH "NAME"
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nmblookup \- NetBIOS over TCP/IP client used to lookup NetBIOS names
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.SH "SYNOPSIS"
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.HP \w'\ 'u
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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}
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.SH "DESCRIPTION"
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.PP
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This tool is part of the
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\fBsamba\fR(7)
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suite\&.
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.PP
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nmblookup
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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\&.
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.SH "OPTIONS"
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.PP
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\-M|\-\-master\-browser
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.RS 4
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Searches for a master browser by looking up the NetBIOS
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\fIname\fR
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with a type of
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\fB0x1d\fR\&. If
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\fI name\fR
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is "\-" then it does a lookup on the special name
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\fB__MSBROWSE__\fR\&. Please note that in order to use the name "\-", you need to make sure "\-" isn\*(Aqt parsed as an argument, e\&.g\&. use :
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\fBnmblookup \-M \-\- \-\fR\&.
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.RE
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.PP
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\-\-recursion
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.RS 4
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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\&.
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.RE
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.PP
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\-S|\-\-status
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.RS 4
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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\&.
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.RE
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.PP
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\-r|\-\-root\-port
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.RS 4
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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
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\fBnmbd\fR(8)
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daemon is running on this machine it also binds to this port\&.
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.RE
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.PP
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\-A|\-\-lookup\-by\-ip
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.RS 4
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Interpret
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\fIname\fR
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as an IP Address and do a node status query on this address\&.
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.RE
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.PP
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\-B|\-\-broadcast <broadcast address>
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.RS 4
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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
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\fIinterfaces\fR
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parameter of the
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\fBsmb.conf\fR(5)
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file\&.
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.RE
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.PP
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\-U|\-\-unicast <unicast address>
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.RS 4
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Do a unicast query to the specified address or host
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\fIunicast address\fR\&. This option (along with the
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\fI\-R\fR
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option) is needed to query a WINS server\&.
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.RE
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.PP
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\-T|\-\-translate
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.RS 4
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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
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.sp
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\fIIP address \&.\&.\&.\&. NetBIOS name\fR
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.sp
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pair that is the normal output\&.
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.RE
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.PP
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\-f|\-\-flags
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.RS 4
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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\&.
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.RE
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.PP
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name
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.RS 4
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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 \*(Aq#<type>\*(Aq to the name\&. This name may also be \*(Aq*\*(Aq, which will return all registered names within a broadcast area\&.
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.RE
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.PP
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\-d|\-\-debuglevel=DEBUGLEVEL
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.RS 4
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\fIlevel\fR
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is an integer from 0 to 10\&. The default value if this parameter is not specified is 1 for client applications\&.
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.sp
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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\&.
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.sp
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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\&.
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.sp
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Note that specifying this parameter here will override the
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\m[blue]\fBlog level\fR\m[]
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parameter in the
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smb\&.conf
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file\&.
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.RE
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.PP
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\-\-debug\-stdout
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.RS 4
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This will redirect debug output to STDOUT\&. By default all clients are logging to STDERR\&.
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.RE
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.PP
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\-\-configfile=<configuration file>
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.RS 4
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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
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\m[blue]\fBclient smb encrypt\fR\m[]\&. See
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smb\&.conf
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for more information\&. The default configuration file name is determined at compile time\&.
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.RE
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.PP
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\-\-option=<name>=<value>
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.RS 4
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Set the
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\fBsmb.conf\fR(5)
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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\&.
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.RE
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.PP
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\-l|\-\-log\-basename=logdirectory
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.RS 4
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Base directory name for log/debug files\&. The extension
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\fB"\&.progname"\fR
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will be appended (e\&.g\&. log\&.smbclient, log\&.smbd, etc\&.\&.\&.)\&. The log file is never removed by the client\&.
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.RE
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.PP
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\-\-leak\-report
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.RS 4
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Enable talloc leak reporting on exit\&.
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.RE
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.PP
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\-\-leak\-report\-full
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.RS 4
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Enable full talloc leak reporting on exit\&.
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.RE
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.PP
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\-V|\-\-version
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.RS 4
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Prints the program version number\&.
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.RE
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.PP
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\-R|\-\-name\-resolve=NAME\-RESOLVE\-ORDER
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.RS 4
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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\&.
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.sp
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The options are: "lmhosts", "host", "wins" and "bcast"\&. They cause names to be resolved as follows:
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.RS
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.sp
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.RS 4
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.ie n \{\
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\h'-04'\(bu\h'+03'\c
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.\}
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.el \{\
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.sp -1
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.IP \(bu 2.3
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.\}
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\fBlmhosts\fR: 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
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\fBlmhosts\fR(5)
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for details) then any name type matches for lookup\&.
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.RE
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.sp
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.RS 4
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.ie n \{\
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\h'-04'\(bu\h'+03'\c
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.\}
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.el \{\
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.sp -1
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.IP \(bu 2.3
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.\}
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\fBhost\fR: Do a standard host name to IP address resolution, using the system
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/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
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/etc/nsswitch\&.conf
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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\&.
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.RE
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.sp
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.RS 4
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.ie n \{\
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\h'-04'\(bu\h'+03'\c
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.\}
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.el \{\
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.sp -1
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.IP \(bu 2.3
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.\}
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\fBwins\fR: Query a name with the IP address listed in the
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\fIwins server\fR
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parameter\&. If no WINS server has been specified this method will be ignored\&.
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.RE
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.sp
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.RS 4
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.ie n \{\
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\h'-04'\(bu\h'+03'\c
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.\}
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.el \{\
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.sp -1
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.IP \(bu 2.3
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.\}
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\fBbcast\fR: Do a broadcast on each of the known local interfaces listed in the
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\fIinterfaces\fR
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parameter\&. This is the least reliable of the name resolution methods as it depends on the target host being on a locally connected subnet\&.
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.RE
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.sp
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.RE
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If this parameter is not set then the name resolve order defined in the
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smb\&.conf
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file parameter (\m[blue]\fBname resolve order\fR\m[]) will be used\&.
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.sp
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The default order is lmhosts, host, wins, bcast\&. Without this parameter or any entry in the
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\m[blue]\fBname resolve order\fR\m[]
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parameter of the
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smb\&.conf
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file, the name resolution methods will be attempted in this order\&.
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.RE
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.PP
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\-O|\-\-socket\-options=SOCKETOPTIONS
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.RS 4
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TCP socket options to set on the client socket\&. See the socket options parameter in the
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smb\&.conf
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manual page for the list of valid options\&.
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.RE
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.PP
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\-m|\-\-max\-protocol=MAXPROTOCOL
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.RS 4
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The value of the parameter (a string) is the highest protocol level that will be supported by the client\&.
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.sp
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Note that specifying this parameter here will override the
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\m[blue]\fBclient max protocol\fR\m[]
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parameter in the
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smb\&.conf
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file\&.
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.RE
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.PP
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\-n|\-\-netbiosname=NETBIOSNAME
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.RS 4
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This option allows you to override the NetBIOS name that Samba uses for itself\&. This is identical to setting the
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\m[blue]\fBnetbios name\fR\m[]
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parameter in the
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smb\&.conf
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file\&. However, a command line setting will take precedence over settings in
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smb\&.conf\&.
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.RE
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.PP
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\-\-netbios\-scope=SCOPE
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.RS 4
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This specifies a NetBIOS scope that
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nmblookup
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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
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\fIvery\fR
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rarely used, only set this parameter if you are the system administrator in charge of all the NetBIOS systems you communicate with\&.
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.RE
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.PP
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\-W|\-\-workgroup=WORKGROUP
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.RS 4
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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)\&.
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.sp
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Note that specifying this parameter here will override the
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\m[blue]\fBworkgroup\fR\m[]
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parameter in the
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smb\&.conf
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file\&.
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.RE
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.PP
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\-r|\-\-realm=REALM
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.RS 4
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Set the realm for the domain\&.
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.sp
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Note that specifying this parameter here will override the
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\m[blue]\fBrealm\fR\m[]
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parameter in the
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smb\&.conf
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file\&.
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.RE
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.PP
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\-?|\-\-help
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.RS 4
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Print a summary of command line options\&.
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.RE
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.PP
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\-\-usage
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.RS 4
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Display brief usage message\&.
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.RE
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.SH "EXAMPLES"
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.PP
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nmblookup
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can be used to query a WINS server (in the same way
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nslookup
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is used to query DNS servers)\&. To query a WINS server,
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nmblookup
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must be called like this:
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.PP
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nmblookup \-U server \-R \*(Aqname\*(Aq
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.PP
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For example, running :
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.PP
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nmblookup \-U samba\&.org \-R \*(AqIRIX#1B\*(Aq
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.PP
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would query the WINS server samba\&.org for the domain master browser (1B name type) for the IRIX workgroup\&.
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.SH "VERSION"
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.PP
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This man page is part of version 4\&.16\&.4 of the Samba suite\&.
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.SH "SEE ALSO"
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.PP
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\fBnmbd\fR(8),
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\fBsamba\fR(7), and
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\fBsmb.conf\fR(5)\&.
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.SH "AUTHOR"
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.PP
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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\&.
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