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RedHat 9 (Linux i386) - man page for nmbd (redhat section 8)

NMBD(8) 										  NMBD(8)

NAME
       nmbd - NetBIOS name server to provide NetBIOS  over IP naming services to clients

SYNOPSIS
       nmbd  [	-D  ]  [ -a ]  [ -i ]  [ -o ]  [ -P ]  [ -h ]  [ -V ]  [ -d <debug level> ]  [ -H
       <lmhosts file> ]  [ -l <log directory> ]  [ -n <primary netbios name> ]	[ -p  <port  num-
       ber> ]  [ -s <configuration file> ]

DESCRIPTION
       This program is part of the Samba suite.

       nmbd  is a server that understands and can reply to NetBIOS over IP name service requests,
       like those produced by SMB/CIFS clients such as	Windows  95/98/ME,  Windows  NT,  Windows
       2000, and LanManager clients. It also participates in the browsing protocols which make up
       the Windows "Network Neighborhood" view.

       SMB/CIFS clients, when they start up, may wish to locate an SMB/CIFS server. That is, they
       wish to know what IP number a specified host is using.

       Amongst other services, nmbd will listen for such requests, and if its own NetBIOS name is
       specified it will respond with the IP number of the host it is running on. Its  "own  Net-
       BIOS  name"  is by default the primary DNS name of the host it is running on, but this can
       be overridden with the -n option (see OPTIONS below). Thus nmbd will  reply  to	broadcast
       queries for its own name(s). Additional names for nmbd to respond on can be set via param-
       eters in the  smb.conf(5) configuration file.

       nmbd can also be used as a WINS (Windows Internet Name Server) server. What this basically
       means  is that it will act as a WINS database server, creating a database from name regis-
       tration requests that it receives and replying to queries from clients for these names.

       In addition, nmbd can act as a WINS proxy, relaying broadcast queries from clients that do
       not understand how to talk the WINS protocol to a WIN server.

OPTIONS
       -D     If  specified,  this  parameter  causes  nmbd  to  operate as a daemon. That is, it
	      detaches itself and runs in the background, fielding requests  on  the  appropriate
	      port.  By  default, nmbd will operate as a daemon if launched from a command shell.
	      nmbd can also be operated from the inetd meta-daemon, although this is  not  recom-
	      mended.

       -a     If this parameter is specified, each new connection will append log messages to the
	      log file.  This is the default.

       -i     If this parameter is specified it causes the server to run "interactively", not  as
	      a  daemon,  even	if the server is executed on the command line of a shell. Setting
	      this parameter negates the implicit deamon mode when run from the command line.

       -o     If this parameter is specified, the log files will be overwritten when  opened.  By
	      default, smbd will append entries to the log files.

       -h     Prints the help information (usage) for nmbd.

       -H <filename>
	      NetBIOS  lmhosts	file. The lmhosts file is a list of NetBIOS names to IP addresses
	      that is loaded by the nmbd server and used via the name resolution mechanism   name
	      resolve  order described in  smb.conf(5) to resolve any NetBIOS name queries needed
	      by the server. Note that the contents of this file are NOT used by nmbd  to  answer
	      any  name queries.  Adding a line to this file affects name NetBIOS resolution from
	      this host ONLY.

	      The default path to this file is compiled into Samba as part of the build  process.
	      Common   defaults   are	/usr/local/samba/lib/lmhosts,  /usr/samba/lib/lmhosts  or
	      /etc/lmhosts. See the  lmhosts(5) man page for details  on  the  contents  of  this
	      file.

       -V     Prints the version number for nmbd.

       -d <debug level>
	      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 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.

	      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 cryp-
	      tic.

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

       -l <log directory>
	      The  -l  parameter specifies a directory into which the "log.nmbd" log file will be
	      created for operational data from the running nmbd server. The default  log  direc-
	      tory  is	compiled  into	Samba  as  part of the build process. Common defaults are
	      /usr/local/samba/var/log.nmb,  /usr/samba/var/log.nmb or /var/log/log.nmb.  Beware:
	      If  the  directory specified does not exist, nmbd will log to the default debug log
	      location defined at compile time.

       -n <primary NetBIOS name>
	      This option allows you to override the NetBIOS name that	Samba  uses  for  itself.
	      This is identical to setting the	NetBIOS name parameter in the smb.conf file. How-
	      ever, a command line setting will take precedence over settings in smb.conf.

       -p <UDP port number>
	      UDP port number is a positive integer value.  This option changes the  default  UDP
	      port  number  (normally  137) that nmbd responds to name queries on. Don't use this
	      option unless you are an expert, in which case you won't need help!

       -s <configuration file>
	      The  default  configuration  file  name  is  set	at  build  time,   typically   as
	      /usr/local/samba/lib/smb.conf,  but  this  may be changed when Samba is autoconfig-
	      ured.

	      The file specified contains the configuration details required by the  server.  See
	      smb.conf(5) for more information.

FILES
       /etc/inetd.conf
	      If  the  server is to be run by the inetd meta-daemon, this file must contain suit-
	      able startup information for the meta-daemon. See  the  UNIX_INSTALL.html  document
	      for details.

       /etc/rc
	      or whatever initialization script your system uses).

	      If  running  the	server	as a daemon at startup, this file will need to contain an
	      appropriate startup sequence for the server. See the UNIX_INSTALL.html document for
	      details.

       /etc/services
	      If  running  the server via the meta-daemon inetd, this file must contain a mapping
	      of service name (e.g., netbios-ssn) to service port (e.g., 139) and  protocol  type
	      (e.g., tcp).  See the UNIX_INSTALL.html document for details.

       /usr/local/samba/lib/smb.conf
	      This  is the default location of the smb.conf server configuration file. Other com-
	      mon  places  that  systems  install  this  file  are  /usr/samba/lib/smb.conf   and
	      /etc/smb.conf.

	      When  run  as  a WINS server (see the wins support parameter in the smb.conf(5) man
	      page), nmbd will store the WINS database in the  file  wins.dat  in  the	var/locks
	      directory configured under wherever Samba was configured to install itself.

	      If  nmbd	is  acting  as	a   browse  master (see the local master parameter in the
	      smb.conf(5) man page, nmbd will store the browsing database in the file  browse.dat
	      in  the  var/locks  directory  configured  under	wherever  Samba was configured to
	      install itself.

SIGNALS
       To shut down an nmbd process it is recommended that SIGKILL (-9) NOT be used, except as	a
       last  resort,  as  this may leave the name database in an inconsistent state.  The correct
       way to terminate nmbd is to send it a SIGTERM (-15) signal and wait for it to die  on  its
       own.

       nmbd  will  accept  SIGHUP,  which  will  cause it to dump out its namelists into the file
       namelist.debug in the /usr/local/samba/var/locks directory  (or	the  var/locks	directory
       configured  under  wherever  Samba was configured to install itself). This will also cause
       nmbd to dump out its server database in the log.nmb file.

       The debug log level of nmbd may be raised or lowered using smbcontrol(1)
	(SIGUSR[1|2] signals are no longer used in Samba 2.2). This is to allow  transient  prob-
       lems to be diagnosed, whilst still running at a normally low log level.

TROUBLESHOOTING
       One of the common causes of difficulty when installing Samba and SWAT is the existsnece of
       some type of firewall or port filtering software on the Samba server. Make sure	that  the
       appropriate  ports  outlined in this man page are available on the server and are not cur-
       rently being blocked by some type of security software such as iptables or "port  sentry".
       For  more  troubleshooting  information, refer to the additional documentation included in
       the Samba distribution.

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

SEE ALSO
       inetd(8), smbd(8) smb.conf(5)
	smbclient(1)
	and the Internet RFC's rfc1001.txt, rfc1002.txt.  In addition  the  CIFS  (formerly  SMB)
       specification   is   available	as  a  link  from  the	Web  page  http://samba.org/cifs/
       <URL:http://samba.org/cifs/>.

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  con-
       verted  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

					 19 November 2002				  NMBD(8)


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