1mailto(samba@samba.org) 
2
3manpage(nmblookup htmlcommand((1)))(1)(23 Oct 1998)(Samba)(SAMBA)
4
5label(NAME)
6manpagename(nmblookup)(NetBIOS over TCP/IP client used to lookup NetBIOS names)
7
8label(SYNOPSIS)
9manpagesynopsis() 
10
11bf(nmblookup) [link(-M)(minusM)] [link(-R)(minusR)] [link(-S)(minusS)] [link(-r)(minusr)] [link(-A)(minusA)] [link(-h)(minush)] [link(-B broadcast address)(minusB)] [link(-U unicast address)(minusU)] [link(-d debuglevel)(minusd)] [link(-s smb config file)(minuss)] [link(-i NetBIOS scope)(minusi)] [link(-T)(minusT)] link(name)(name)
12
13label(DESCRIPTION)
14manpagedescription()
15
16This program is part of the bf(Samba) suite.
17
18bf(nmblookup) is used to query NetBIOS names and map them to IP
19addresses in a network using NetBIOS over TCP/IP queries. The options
20allow the name queries to be directed at a particular IP broadcast area
21or to a particular machine. All queries are done over UDP.
22
23label(OPTIONS)
24manpageoptions()
25
26startdit()
27
28label(minusM)
29dit(bf(-M)) Searches for a master browser by looking up the 
30NetBIOS name link(bf(name))(name) with a type of 0x1d. If link(bf(name))(name)
31is tt("-") then it does a lookup on the special name tt(__MSBROWSE__).
32
33label(minusR)
34dit(bf(-R)) Set the recursion desired bit in the packet to do a
35recursive lookup. This is used when sending a name query to a machine
36running a WINS server and the user wishes to query the names in the
37WINS server.  If this bit is unset the normal (broadcast responding)
38NetBIOS processing code on a machine is used instead. See rfc1001,
39rfc1002 for details.
40
41label(minusS)
42dit(bf(-S)) Once the name query has returned an IP address then do a
43node status query as well. A node status query returns the NetBIOS names 
44registered by a host.
45
46label(minusr)
47dit(bf(-r)) Try and bind to UDP port 137 to send and receive UDP
48datagrams. The reason for this option is a bug in Windows 95 where it
49ignores the source port of the requesting packet and only replies to
50UDP port 137. Unfortunately, on most UNIX systems root privilage is
51needed to bind to this port, and in addition, if the
52url(bf(nmbd))(nmbd.8.html) daemon is running on this machine it also
53binds to this port.
54
55label(minusA)
56dit(bf(-A)) Interpret <name> as an IP Address and do a node status
57query on this address.
58
59label(minush)
60dit(bf(-h)) Print a help (usage) message.
61
62label(minusB)
63dit(bf(-B broadcast address)) Send the query to the given broadcast
64address. Without this option the default behavior of nmblookup is to
65send the query to the broadcast address of the network
66interfaces as either auto-detected or defined in the 
67url(bf(interfaces))(smb.conf.5.html#interfaces) parameter of the 
68url(bf(smb.conf (5)))(smb.conf.5.html) file.
69
70label(minusU)
71dit(bf(-U unicast address)) Do a unicast query to the specified
72address or host tt("unicast address"). This option (along with the
73link(bf(-R))(minusR) option) is needed to query a WINS server.
74
75label(minusd)
76dit(bf(-d debuglevel)) debuglevel is an integer from 0 to 10.
77
78The default value if this parameter is not specified is zero.
79
80The higher this value, the more detail will be logged about the
81activities of bf(nmblookup). At level 0, only critical errors and
82serious warnings will be logged.
83
84Levels above 1 will generate considerable amounts of log data, and
85should only be used when investigating a problem. Levels above 3 are
86designed for use only by developers and generate HUGE amounts of
87data, most of which is extremely cryptic.
88
89Note that specifying this parameter here will override the url(bf(log
90level))(smb.conf.5.html#loglevel) parameter in the url(bf(smb.conf
91(5)))(smb.conf.5.html) file.
92
93label(minuss)
94dit(bf(-s smb.conf)) This parameter specifies the pathname to the
95Samba configuration file, url(bf(smb.conf))(smb.conf.5.html). 
96This file controls all aspects of
97the Samba setup on the machine.
98
99label(minusi)
100dit(bf(-i scope)) This specifies a NetBIOS scope that bf(nmblookup) will use
101to communicate with when generating NetBIOS names. For details on the
102use of NetBIOS scopes, see rfc1001.txt and rfc1002.txt. NetBIOS scopes
103are em(very) rarely used, only set this parameter if you are the
104system administrator in charge of all the NetBIOS systems you
105communicate with.
106
107label(minusT)
108dit(bf(-T)) This causes any IP addresses found in the lookup to be
109looked up via a reverse DNS lookup into a DNS name, and printed out
110before each tt("IP address   NetBIOS name") pair that is the normal
111output.
112
113label(name)
114dit(bf(name)) This is the NetBIOS name being queried. Depending upon
115the previous options this may be a NetBIOS name or IP address. If a
116NetBIOS name then the different name types may be specified by
117appending tt(#<type>) to the name. This name may also be tt("*"),
118which will return all registered names within a broadcast area.
119
120enddit()
121
122label(EXAMPLES)
123manpagesection(EXAMPLES)
124
125bf(nmblookup) can be used to query a WINS server (in the same way
126bf(nslookup) is used to query DNS servers). To query a WINS server,
127bf(nmblookup) must be called like this:
128
129tt(nmblookup -U server -R 'name')
130
131For example, running :
132
133tt(nmblookup -U samba.org -R IRIX#1B')
134
135would query the WINS server samba.org for the domain master
136browser (1B name type) for the IRIX workgroup.
137
138label(VERSION)
139manpagesection(VERSION)
140
141This man page is correct for version 2.0 of the Samba suite.
142
143label(SEEALSO)
144manpageseealso()
145
146url(bf(samba (7)))(samba.7.html), url(bf(nmbd (8)))(nmbd.8.html),
147url(bf(smb.conf (5)))(smb.conf.5.html)
148
149label(AUTHOR)
150manpageauthor()
151
152The original Samba software and related utilities were created by
153Andrew Tridgell email(samba@samba.org). Samba is now developed
154by the Samba Team as an Open Source project similar to the way the
155Linux kernel is developed.
156
157The original Samba man pages were written by Karl Auer. The man page
158sources were converted to YODL format (another excellent piece of Open
159Source software, available at
160url(bf(ftp://ftp.icce.rug.nl/pub/unix/))(ftp://ftp.icce.rug.nl/pub/unix/))
161and updated for the Samba2.0 release by Jeremy Allison.
162email(samba@samba.org).
163
164See url(bf(samba (7)))(samba.7.html) to find out how to get a full
165list of contributors and details on how to submit bug reports,
166comments etc.
167
168