NAME
    nmblookup - NetBIOS over TCP/IP client used to lookup NetBIOS names

SYNOPSIS
    nmblookup [ -f ] [ -M ] [ -R ] [ -S ] [ -r ] [ -A ] [ -h ] [ -B
    <broadcast address> ] [ -U <unicast address> ] [ -d <debug level> ]
    [ -s <smb config file> ]  [ -i <NetBIOS scope> ]  [ -T ]  name

DESCRIPTION
    This tool is part of the  Samba suite.

    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.

OPTIONS
    -f   Causes nmblookup to print out the flags in the NMB packet  head-
    ers. These flags will print out as strings like Authoritative,
    Recursion_Desired, Recursion_available, etc.

    -M   Searches for a master browser by looking up the  NetBIOS name
    name with a type of 0x1d. If name is "-" then it does a lookup
    on the special name __MSBROWSE__.

    -R   Set the recursion desired bit in the packet to do a recursive
    lookup. This is used when sending a name query to a machine run-
    ning a WINS server and the user wishes to query the names in the
    WINS server. If this bit is unset the normal (broadcast respond-
    ing) NetBIOS processing code on a machine is used  instead. See
    rfc1001, rfc1002 for details.

    -S   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.

    -r   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 nmbd(8) daemon is running on this machine it also  binds
    to this port.

    -A   Interpret  name as an IP Address and do a node status query on
    this address.

    -h   Print a help (usage) message.

    -B <broadcast address>
    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 interfaces
     parameter of the smb.conf (5) file.

    -U <unicast address>
    Do a unicast query to  the specified address or host unicast
    address. This option (along with the -R option) is needed to
    query a WINS server.

    -d <debuglevel>
    debuglevel is an integer from 0 to 10.

    The default value if this parameter is not specified is zero.

    The higher this value, the more detail will be logged about the
    activities of nmblookup. At level 0, only  critical errors and
    serious warnings will be logged.

    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 data, most of which is extremely cryptic.

    Note that specifying this parameter here will override the  log
    level parameter in the smb.conf(5) file.

    -s <smb.conf>
    This parameter specifies the pathname to the Samba configuration
    file, smb.conf(5) This file controls all aspects of the  Samba
    setup on the machine.

    -i <scope>
    This specifies a NetBIOS scope that nmblookup will use to commu-
    nicate with when generating NetBIOS names. For details on the
    use of NetBIOS scopes, see rfc1001.txt and rfc1002.txt. NetBIOS
    scopes are very rarely used, only set this parameter if you are
    the system administrator in charge of all the NetBIOS systems
    you communicate with.

    -T   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

    IP address .... NetBIOS name

    pair that is the normal output.

    name  This is the NetBIOS name being queried. Depending upon the pre-
    vious options this may be a NetBIOS name or IP address. If a
    NetBIOS name then the different name types may be  specified by
    appending  '#<type>' to the name. This name may also be '*',
    which will return all registered names within a broadcast  area.

EXAMPLES
    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:

    nmblookup -U server -R 'name'

    For example, running :

    nmblookup -U samba.org -R 'IRIX#1B'

    would query the WINS server samba.org for the domain master browser (1B
    name type) for the IRIX workgroup.

VERSION
    This man page is correct for version 2.2 of the Samba suite.

SEE ALSO
    nmbd(8) samba(7) and smb.conf(5)

AUTHOR
    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.

    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/
    <URL: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