| 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 V1.74.0"></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 — NetBIOS over TCP/IP client used to lookup NetBIOS
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| 2 | names</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="cmdsynopsis"><p><code class="literal">nmblookup</code> [-M] [-R] [-S] [-r] [-A] [-h] [-B <broadcast address>] [-U <unicast address>] [-d <debug level>] [-s <smb config file>] [-i <NetBIOS scope>] [-T] [-f] {name}</p></div></div><div class="refsect1" lang="en"><a name="id2483412"></a><h2>DESCRIPTION</h2><p>This tool is part of the <a class="citerefentry" href="samba.7.html"><span class="citerefentry"><span class="refentrytitle">samba</span>(7)</span></a> suite.</p><p><code class="literal">nmblookup</code> is used to query NetBIOS names
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| 3 | and map them to IP addresses in a network using NetBIOS over TCP/IP
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| 4 | queries. The options allow the name queries to be directed at a
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| 5 | particular IP broadcast area or to a particular machine. All queries
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| 6 | are done over UDP.</p></div><div class="refsect1" lang="en"><a name="id2483558"></a><h2>OPTIONS</h2><div class="variablelist"><dl><dt><span class="term">-M</span></dt><dd><p>Searches for a master browser by looking
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| 7 | up the NetBIOS name <em class="replaceable"><code>name</code></em> with a
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| 8 | type of <code class="constant">0x1d</code>. If <em class="replaceable"><code>
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| 9 | name</code></em> is "-" then it does a lookup on the special name
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| 10 | <code class="constant">__MSBROWSE__</code>. Please note that in order to
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| 11 | use the name "-", you need to make sure "-" isn't parsed as an
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| 12 | argument, e.g. use :
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| 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
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| 14 | to do a recursive lookup. This is used when sending a name
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| 15 | query to a machine running a WINS server and the user wishes
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| 16 | to query the names in the WINS server. If this bit is unset
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| 17 | the normal (broadcast responding) NetBIOS processing code
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| 18 | on a machine is used instead. See RFC1001, RFC1002 for details.
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| 19 | </p></dd><dt><span class="term">-S</span></dt><dd><p>Once the name query has returned an IP
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| 20 | address then do a node status query as well. A node status
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| 21 | query returns the NetBIOS names registered by a host.
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| 22 | </p></dd><dt><span class="term">-r</span></dt><dd><p>Try and bind to UDP port 137 to send and receive UDP
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| 23 | datagrams. The reason for this option is a bug in Windows 95
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| 24 | where it ignores the source port of the requesting packet
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| 25 | and only replies to UDP port 137. Unfortunately, on most UNIX
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| 26 | systems root privilege is needed to bind to this port, and
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| 27 | in addition, if the <a class="citerefentry" 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.
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| 28 | </p></dd><dt><span class="term">-A</span></dt><dd><p>Interpret <em class="replaceable"><code>name</code></em> as
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| 29 | an IP Address and do a node status query on this address.</p></dd><dt><span class="term">-n <primary NetBIOS name></span></dt><dd><p>This option allows you to override
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| 30 | the NetBIOS name that Samba uses for itself. This is identical
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| 31 | to setting the <a class="link" href="smb.conf.5.html#NETBIOSNAME" target="_top">netbios name</a> parameter in the <code class="filename">smb.conf</code> file.
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| 32 | However, a command
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| 33 | line setting will take precedence over settings in
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| 34 | <code class="filename">smb.conf</code>.</p></dd><dt><span class="term">-i <scope></span></dt><dd><p>This specifies a NetBIOS scope that
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| 35 | <code class="literal">nmblookup</code> will use to communicate with when
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| 36 | generating NetBIOS names. For details on the use of NetBIOS
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| 37 | scopes, see rfc1001.txt and rfc1002.txt. NetBIOS scopes are
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| 38 | <span class="emphasis"><em>very</em></span> rarely used, only set this parameter
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