'\" t .\" Title: nmblookup .\" Author: [see the "AUTHOR" section] .\" Generator: DocBook XSL Stylesheets v1.75.2 .\" Date: 01/14/2010 .\" Manual: User Commands .\" Source: Samba 3.3 .\" Language: English .\" .TH "NMBLOOKUP" "1" "01/14/2010" "Samba 3\&.3" "User Commands" .\" ----------------------------------------------------------------- .\" * set default formatting .\" ----------------------------------------------------------------- .\" disable hyphenation .nh .\" disable justification (adjust text to left margin only) .ad l .\" ----------------------------------------------------------------- .\" * MAIN CONTENT STARTS HERE * .\" ----------------------------------------------------------------- .SH "NAME" nmblookup \- NetBIOS over TCP/IP client used to lookup NetBIOS names .SH "SYNOPSIS" .HP \w'\ 'u nmblookup [\-M] [\-R] [\-S] [\-r] [\-A] [\-h] [\-B\ ] [\-U\ ] [\-d\ ] [\-s\ ] [\-i\ ] [\-T] [\-f] {name} .SH "DESCRIPTION" .PP This tool is part of the \fBsamba\fR(7) suite\&. .PP nmblookup 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\&. .SH "OPTIONS" .PP \-M .RS 4 Searches for a master browser by looking up the NetBIOS name \fIname\fR with a type of \fB0x1d\fR\&. If \fI name\fR is "\-" then it does a lookup on the special name \fB__MSBROWSE__\fR\&. Please note that in order to use the name "\-", you need to make sure "\-" isn\'t parsed as an argument, e\&.g\&. use : \fBnmblookup \-M \-\- \-\fR\&. .RE .PP \-R .RS 4 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\&. .RE .PP \-S .RS 4 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\&. .RE .PP \-r .RS 4 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 \fBnmbd\fR(1M) daemon is running on this machine it also binds to this port\&. .RE .PP \-A .RS 4 Interpret \fIname\fR as an IP Address and do a node status query on this address\&. .RE .PP \-n|\-\-netbiosname .RS 4 This option allows you to override the NetBIOS name that Samba uses for itself\&. This is identical to setting the \m[blue]\fB\%smb.conf.5.html#\fR\m[] parameter in the smb\&.conf file\&. However, a command line setting will take precedence over settings in smb\&.conf\&. .RE .PP \-i|\-\-scope .RS 4 This specifies a NetBIOS scope that nmblookup 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 \fIvery\fR rarely used, only set this parameter if you are the system administrator in charge of all the NetBIOS systems you communicate with\&. .RE .PP \-W|\-\-workgroup=domain .RS 4 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)\&. .RE .PP \-O|\-\-socket\-options socket options .RS 4 TCP socket options to set on the client socket\&. See the socket options parameter in the smb\&.conf manual page for the list of valid options\&. .RE .PP \-h|\-\-help .RS 4 Print a summary of command line options\&. .RE .PP \-B .RS 4 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 \fIinterfaces\fR parameter of the \fBsmb.conf\fR(4) file\&. .RE .PP \-U .RS 4 Do a unicast query to the specified address or host \fIunicast address\fR\&. This option (along with the \fI\-R\fR option) is needed to query a WINS server\&. .RE .PP \-d|\-\-debuglevel=level .RS 4 \fIlevel\fR is an integer from 0 to 10\&. The default value if this parameter is not specified is 0\&. .sp 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\&. .sp 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\&. .sp Note that specifying this parameter here will override the \m[blue]\fB\%smb.conf.5.html#\fR\m[] parameter in the smb\&.conf file\&. .RE .PP \-V|\-\-version .RS 4 Prints the program version number\&. .RE .PP \-s|\-\-configfile .RS 4 The file specified contains the configuration details required by the server\&. The information in this file includes server\-specific information such as what printcap file to use, as well as descriptions of all the services that the server is to provide\&. See smb\&.conf for more information\&. The default configuration file name is determined at compile time\&. .RE .PP \-l|\-\-log\-basename=logdirectory .RS 4 Base directory name for log/debug files\&. The extension \fB"\&.progname"\fR will be appended (e\&.g\&. log\&.smbclient, log\&.smbd, etc\&.\&.\&.)\&. The log file is never removed by the client\&. .RE .PP \-T .RS 4 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 .sp \fIIP address \&.\&.\&.\&. NetBIOS name\fR .sp pair that is the normal output\&. .RE .PP \-f .RS 4 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\&. .RE .PP name .RS 4 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 \'#\' to the name\&. This name may also be \'*\', which will return all registered names within a broadcast area\&. .RE .SH "EXAMPLES" .PP nmblookup can be used to query a WINS server (in the same way nslookup is used to query DNS servers)\&. To query a WINS server, nmblookup must be called like this: .PP nmblookup \-U server \-R \'name\' .PP For example, running : .PP nmblookup \-U samba\&.org \-R \'IRIX#1B\' .PP would query the WINS server samba\&.org for the domain master browser (1B name type) for the IRIX workgroup\&. .SH "VERSION" .PP This man page is correct for version 3 of the Samba suite\&. .SH "SEE ALSO" .PP \fBnmbd\fR(1M), \fBsamba\fR(7), and \fBsmb.conf\fR(4)\&. .SH "AUTHOR" .PP 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\&. .PP The original Samba man pages were written by Karl Auer\&. The man page sources were converted to YODL format (another excellent piece of Open Source software, available at ftp://ftp\&.icce\&.rug\&.nl/pub/unix/) and updated for the Samba 2\&.0 release by Jeremy Allison\&. The conversion to DocBook for Samba 2\&.2 was done by Gerald Carter\&. The conversion to DocBook XML 4\&.2 for Samba 3\&.0 was done by Alexander Bokovoy\&.