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1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>nmblookup</title><link rel="stylesheet" href="samba.css" type="text/css"><meta name="generator" content="DocBook XSL Stylesheets V1.71.0"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="refentry" lang="en"><a name="nmblookup"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>nmblookup &#8212; NetBIOS over TCP/IP client used to lookup NetBIOS
2        names</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="cmdsynopsis"><p><code class="command">nmblookup</code>  [-M] [-R] [-S] [-r] [-A] [-h] [-B &lt;broadcast address&gt;] [-U &lt;unicast address&gt;] [-d &lt;debug level&gt;] [-s &lt;smb config file&gt;] [-i &lt;NetBIOS scope&gt;] [-T] [-f] {name}</p></div></div><div class="refsect1" lang="en"><a name="id259363"></a><h2>DESCRIPTION</h2><p>This tool is part of the <a href="samba.7.html"><span class="citerefentry"><span class="refentrytitle">samba</span>(7)</span></a> suite.</p><p><span><strong class="command">nmblookup</strong></span> is used to query NetBIOS names
3        and map them to IP addresses in a network using NetBIOS over TCP/IP
4        queries. The options allow the name queries to be directed at a
5        particular IP broadcast area or to a particular machine. All queries
6        are done over UDP.</p></div><div class="refsect1" lang="en"><a name="id259391"></a><h2>OPTIONS</h2><div class="variablelist"><dl><dt><span class="term">-M</span></dt><dd><p>Searches for a master browser by looking
7                up the  NetBIOS name <em class="replaceable"><code>name</code></em> with a
8                type of <code class="constant">0x1d</code>. If <em class="replaceable"><code>
9                name</code></em> is "-" then it does a lookup on the special name
10                <code class="constant">__MSBROWSE__</code>. Please note that in order to
11                use the name "-", you need to make sure "-" isn't parsed as an
12                argument, e.g. use :
13                <strong class="userinput"><code>nmblookup -M -- -</code></strong>.</p></dd><dt><span class="term">-R</span></dt><dd><p>Set the recursion desired bit in the packet
14                to do a recursive lookup. This is used when sending a name
15                query to a machine running a WINS server and the user wishes
16                to query the names in the WINS server.  If this bit is unset
17                the normal (broadcast responding) NetBIOS processing code
18                on a machine is used instead. See RFC1001, RFC1002 for details.
19                </p></dd><dt><span class="term">-S</span></dt><dd><p>Once the name query has returned an IP
20                address then do a node status query as well. A node status
21                query returns the NetBIOS names registered by a host.
22                </p></dd><dt><span class="term">-r</span></dt><dd><p>Try and bind to UDP port 137 to send and receive UDP
23                datagrams. The reason for this option is a bug in Windows 95
24                where it ignores the source port of the requesting packet
25                and only replies to UDP port 137. Unfortunately, on most UNIX
26                systems root privilege is needed to bind to this port, and
27                in addition, if the <a href="nmbd.8.html"><span class="citerefentry"><span class="refentrytitle">nmbd</span>(8)</span></a> daemon is running on this machine it also binds to this port.
28                </p></dd><dt><span class="term">-A</span></dt><dd><p>Interpret <em class="replaceable"><code>name</code></em> as
29                an IP Address and do a node status query on this address.</p></dd><dt><span class="term">-n &lt;primary NetBIOS name&gt;</span></dt><dd><p>This option allows you to override
30the NetBIOS name that Samba uses for itself. This is identical
31to setting the <a class="indexterm" name="id260420"></a> parameter in the <code class="filename">smb.conf</code> file.
32However, a command
33line setting will take precedence over settings in
34<code class="filename">smb.conf</code>.</p></dd><dt><span class="term">-i &lt;scope&gt;</span></dt><dd><p>This specifies a NetBIOS scope that
35<span><strong class="command">nmblookup</strong></span> will use to communicate with when
36generating NetBIOS names. For details on the use of NetBIOS
37scopes, see rfc1001.txt and rfc1002.txt. NetBIOS scopes are
38<span class="emphasis"><em>very</em></span> rarely used, only set this parameter
39if you are the system administrator in charge of all the
40NetBIOS systems you communicate with.</p></dd><dt><span class="term">-W|--workgroup=domain</span></dt><dd><p>Set the SMB domain of the username.   This
41overrides the default domain which is the domain defined in
42smb.conf.  If the domain specified is the same as the servers
43NetBIOS name, it causes the client to log on using the servers local
44SAM (as opposed to the Domain SAM). </p></dd><dt><span class="term">-O socket options</span></dt><dd><p>TCP socket options to set on the client
45socket. See the socket options parameter in
46the <code class="filename">smb.conf</code> manual page for the list of valid
47options. </p></dd><dt><span class="term">-h|--help</span></dt><dd><p>Print a summary of command line options.
48</p></dd><dt><span class="term">-B &lt;broadcast address&gt;</span></dt><dd><p>Send the query to the given broadcast address. Without
49                this option the default behavior of nmblookup is to send the
50                query to the broadcast address of the network interfaces as
51                either auto-detected or defined in the <a href="smb.conf.5.html#INTERFACES" target="_top"><em class="parameter"><code>interfaces</code></em>
52                </a> parameter of the <a href="smb.conf.5.html"><span class="citerefentry"><span class="refentrytitle">smb.conf</span>(5)</span></a> file.
53                </p></dd><dt><span class="term">-U &lt;unicast address&gt;</span></dt><dd><p>Do a unicast query to the specified address or
54                host <em class="replaceable"><code>unicast address</code></em>. This option
55                (along with the <em class="parameter"><code>-R</code></em> option) is needed to
56                query a WINS server.</p></dd><dt><span class="term">-V</span></dt><dd><p>Prints the program version number.
57</p></dd><dt><span class="term">-s &lt;configuration file&gt;</span></dt><dd><p>The file specified contains the
58configuration details required by the server.  The
59information in this file includes server-specific
60information such as what printcap file to use, as well
61as descriptions of all the services that the server is
62to provide. See <code class="filename">smb.conf</code> for more information.
63The default configuration file name is determined at
64compile time.</p></dd><dt><span class="term">-d|--debuglevel=level</span></dt><dd><p><em class="replaceable"><code>level</code></em> is an integer
65from 0 to 10.  The default value if this parameter is
66not specified is zero.</p><p>The higher this value, the more detail will be
67logged to the log files about the activities of the
68server. At level 0, only critical errors and serious
69warnings will be logged. Level 1 is a reasonable level for
70day-to-day running - it generates a small amount of
71information about operations carried out.</p><p>Levels above 1 will generate considerable
72amounts of log data, and should only be used when
73investigating a problem. Levels above 3 are designed for
74use only by developers and generate HUGE amounts of log
75data, most of which is extremely cryptic.</p><p>Note that specifying this parameter here will
76override the <a class="indexterm" name="id300479"></a> parameter
77in the <code class="filename">smb.conf</code> file.</p></dd><dt><span class="term">-l|--logfile=logdirectory</span></dt><dd><p>Base directory name for log/debug files. The extension
78<code class="constant">".progname"</code> will be appended (e.g. log.smbclient,
79log.smbd, etc...). The log file is never removed by the client.
80</p></dd><dt><span class="term">-T</span></dt><dd><p>This causes any IP addresses found in the
81                lookup to be looked up via a reverse DNS lookup into a
82                DNS name, and printed out before each</p><p><span class="emphasis"><em>IP address .... NetBIOS name</em></span></p><p> pair that is the normal output.</p></dd><dt><span class="term">-f</span></dt><dd><p>
83                Show which flags apply to the name that has been looked up. Possible
84                answers are zero or more of: Response, Authoritative,
85                Truncated, Recursion_Desired, Recursion_Available, Broadcast.
86                </p></dd><dt><span class="term">name</span></dt><dd><p>This is the NetBIOS name being queried. Depending
87                upon the previous options this may be a NetBIOS name or IP address.
88                If a NetBIOS name then the different name types may be specified
89                by appending '#&lt;type&gt;' to the name. This name may also be
90                '*', which will return all registered names within a broadcast
91                area.</p></dd></dl></div></div><div class="refsect1" lang="en"><a name="id300559"></a><h2>EXAMPLES</h2><p><span><strong class="command">nmblookup</strong></span> can be used to query
92                a WINS server (in the same way <span><strong class="command">nslookup</strong></span> is
93                used to query DNS servers). To query a WINS server, <span><strong class="command">nmblookup</strong></span> 
94                must be called like this:</p><p><span><strong class="command">nmblookup -U server -R 'name'</strong></span></p><p>For example, running :</p><p><span><strong class="command">nmblookup -U samba.org -R 'IRIX#1B'</strong></span></p><p>would query the WINS server samba.org for the domain
95                master browser (1B name type) for the IRIX workgroup.</p></div><div class="refsect1" lang="en"><a name="id300608"></a><h2>VERSION</h2><p>This man page is correct for version 3.0 of
96        the Samba suite.</p></div><div class="refsect1" lang="en"><a name="id300619"></a><h2>SEE ALSO</h2><p><a href="nmbd.8.html"><span class="citerefentry"><span class="refentrytitle">nmbd</span>(8)</span></a>, <a href="samba.7.html"><span class="citerefentry"><span class="refentrytitle">samba</span>(7)</span></a>, and <a href="smb.conf.5.html"><span class="citerefentry"><span class="refentrytitle">smb.conf</span>(5)</span></a>.</p></div><div class="refsect1" lang="en"><a name="id300651"></a><h2>AUTHOR</h2><p>The original Samba software and related utilities
97        were created by Andrew Tridgell. Samba is now developed
98        by the Samba Team as an Open Source project similar
99        to the way the Linux kernel is developed.</p><p>The original Samba man pages were written by Karl Auer.
100        The man page sources were converted to YODL format (another
101        excellent piece of Open Source software, available at <a href="ftp://ftp.icce.rug.nl/pub/unix/" target="_top">
102        ftp://ftp.icce.rug.nl/pub/unix/</a>) and updated for the Samba 2.0
103        release by Jeremy Allison.  The conversion to DocBook for
104        Samba 2.2 was done by Gerald Carter. The conversion to DocBook
105        XML 4.2 for Samba 3.0 was done by Alexander Bokovoy.</p></div></div></body></html>
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