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 — 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="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="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><code class="literal">nmblookup</code> 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 <primary NetBIOS name></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 <scope></span></dt><dd><p>This specifies a NetBIOS scope that 35<code class="literal">nmblookup</code> 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 <broadcast address></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 <unicast address></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 <configuration file></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 '#<type>' 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><code class="literal">nmblookup</code> can be used to query 92 a WINS server (in the same way <code class="literal">nslookup</code> is 93 used to query DNS servers). To query a WINS server, <code class="literal">nmblookup</code> 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 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> 106