| 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="id2483388"></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="id2483542"></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|--netbiosname <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#" target="_top"></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 <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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| 39 | if you are the system administrator in charge of all the
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| 40 | NetBIOS 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
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| 41 | overrides the default domain which is the domain defined in
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| 42 | smb.conf. If the domain specified is the same as the servers
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| 43 | NetBIOS name, it causes the client to log on using the servers local
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| 44 | SAM (as opposed to the Domain SAM). </p></dd><dt><span class="term">-O|--socket-options socket options</span></dt><dd><p>TCP socket options to set on the client
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| 45 | socket. See the socket options parameter in
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| 46 | the <code class="filename">smb.conf</code> manual page for the list of valid
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| 47 | options. </p></dd><dt><span class="term">-h|--help</span></dt><dd><p>Print a summary of command line options.
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| 48 | </p></dd><dt><span class="term">-B <broadcast address></span></dt><dd><p>Send the query to the given broadcast address. Without
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| 49 | this option the default behavior of nmblookup is to send the
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| 50 | query to the broadcast address of the network interfaces as
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| 51 | either auto-detected or defined in the <a class="ulink" href="smb.conf.5.html#INTERFACES" target="_top"><em class="parameter"><code>interfaces</code></em>
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| 52 | </a> parameter of the <a class="citerefentry" href="smb.conf.5.html"><span class="citerefentry"><span class="refentrytitle">smb.conf</span>(5)</span></a> file.
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| 53 | </p></dd><dt><span class="term">-U <unicast address></span></dt><dd><p>Do a unicast query to the specified address or
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| 54 | host <em class="replaceable"><code>unicast address</code></em>. This option
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| 55 | (along with the <em class="parameter"><code>-R</code></em> option) is needed to
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| 56 | query a WINS server.</p></dd><dt><span class="term">-d|--debuglevel=level</span></dt><dd><p><em class="replaceable"><code>level</code></em> is an integer
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| 57 | from 0 to 10. The default value if this parameter is
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| 58 | not specified is 0.</p><p>The higher this value, the more detail will be
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| 59 | logged to the log files about the activities of the
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| 60 | server. At level 0, only critical errors and serious
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| 61 | warnings will be logged. Level 1 is a reasonable level for
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| 62 | day-to-day running - it generates a small amount of
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| 63 | information about operations carried out.</p><p>Levels above 1 will generate considerable
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| 64 | amounts of log data, and should only be used when
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| 65 | investigating a problem. Levels above 3 are designed for
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| 66 | use only by developers and generate HUGE amounts of log
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| 67 | data, most of which is extremely cryptic.</p><p>Note that specifying this parameter here will
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| 68 | override the <a class="link" href="smb.conf.5.html#" target="_top"></a> parameter
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| 69 | in the <code class="filename">smb.conf</code> file.</p></dd><dt><span class="term">-V|--version</span></dt><dd><p>Prints the program version number.
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| 70 | </p></dd><dt><span class="term">-s|--configfile <configuration file></span></dt><dd><p>The file specified contains the
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| 71 | configuration details required by the server. The
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| 72 | information in this file includes server-specific
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| 73 | information such as what printcap file to use, as well
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| 74 | as descriptions of all the services that the server is
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| 75 | to provide. See <code class="filename">smb.conf</code> for more information.
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| 76 | The default configuration file name is determined at
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| 77 | compile time.</p></dd><dt><span class="term">-l|--log-basename=logdirectory</span></dt><dd><p>Base directory name for log/debug files. The extension
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| 78 | <code class="constant">".progname"</code> will be appended (e.g. log.smbclient,
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| 79 | log.smbd, etc...). The log file is never removed by the client.
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| 80 | </p></dd><dt><span class="term">-T</span></dt><dd><p>This causes any IP addresses found in the
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| 81 | lookup to be looked up via a reverse DNS lookup into a
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| 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>
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| 83 | Show which flags apply to the name that has been looked up. Possible
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| 84 | answers are zero or more of: Response, Authoritative,
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| 85 | Truncated, Recursion_Desired, Recursion_Available, Broadcast.
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| 86 | </p></dd><dt><span class="term">name</span></dt><dd><p>This is the NetBIOS name being queried. Depending
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| 87 | upon the previous options this may be a NetBIOS name or IP address.
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| 88 | If a NetBIOS name then the different name types may be specified
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| 89 | by appending '#<type>' to the name. This name may also be
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| 90 | '*', which will return all registered names within a broadcast
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| 91 | area.</p></dd></dl></div></div><div class="refsect1" lang="en"><a name="id2481756"></a><h2>EXAMPLES</h2><p><code class="literal">nmblookup</code> can be used to query
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| 92 | a WINS server (in the same way <code class="literal">nslookup</code> is
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| 93 | used to query DNS servers). To query a WINS server, <code class="literal">nmblookup</code>
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| 94 | must be called like this:</p><p><code class="literal">nmblookup -U server -R 'name'</code></p><p>For example, running :</p><p><code class="literal">nmblookup -U samba.org -R 'IRIX#1B'</code></p><p>would query the WINS server samba.org for the domain
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| 95 | master browser (1B name type) for the IRIX workgroup.</p></div><div class="refsect1" lang="en"><a name="id2481806"></a><h2>VERSION</h2><p>This man page is correct for version 3 of
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| 96 | the Samba suite.</p></div><div class="refsect1" lang="en"><a name="id2481817"></a><h2>SEE ALSO</h2><p><a class="citerefentry" href="nmbd.8.html"><span class="citerefentry"><span class="refentrytitle">nmbd</span>(8)</span></a>, <a class="citerefentry" href="samba.7.html"><span class="citerefentry"><span class="refentrytitle">samba</span>(7)</span></a>, and <a class="citerefentry" 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="id2481850"></a><h2>AUTHOR</h2><p>The original Samba software and related utilities
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| 97 | were created by Andrew Tridgell. Samba is now developed
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| 98 | by the Samba Team as an Open Source project similar
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| 99 | to the way the Linux kernel is developed.</p><p>The original Samba man pages were written by Karl Auer.
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| 100 | The man page sources were converted to YODL format (another
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| 101 | excellent piece of Open Source software, available at <a class="ulink" href="ftp://ftp.icce.rug.nl/pub/unix/" target="_top">
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| 102 | ftp://ftp.icce.rug.nl/pub/unix/</a>) and updated for the Samba 2.0
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| 103 | release by Jeremy Allison. The conversion to DocBook for
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| 104 | Samba 2.2 was done by Gerald Carter. The conversion to DocBook
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| 105 | XML 4.2 for Samba 3.0 was done by Alexander Bokovoy.</p></div></div></body></html>
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