docs/docbook/manpages/nmbd.8.sgml

   1 <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook V4.1//EN">
   2 <refentry id="nmbd">
   3
   4 <refmeta>
   5         <refentrytitle>nmbd</refentrytitle>
   6         <manvolnum>8</manvolnum>
   7 </refmeta>
   8
   9
  10 <refnamediv>
  11         <refname>nmbd</refname>
  12         <refpurpose>NetBIOS name server to provide NetBIOS
  13         over IP naming services to clients</refpurpose>
  14 </refnamediv>
  15
  16 <refsynopsisdiv>
  17         <cmdsynopsis>
  18                 <command>nmbd</command>
  19                 <arg choice="opt">-D</arg>
  20                 <arg choice="opt">-a</arg>
  21                 <arg choice="opt">-o</arg>
  22                 <arg choice="opt">-P</arg>
  23                 <arg choice="opt">-h</arg>
  24                 <arg choice="opt">-V</arg>
  25                 <arg choice="opt">-d &lt;debug level&gt;</arg>
  26                 <arg choice="opt">-H &lt;lmhosts file&gt;</arg>
  27                 <arg choice="opt">-l &lt;log file&gt;</arg>
  28                 <arg choice="opt">-n &lt;primary netbios name&gt;</arg>
  29                 <arg choice="opt">-p &lt;port number&gt;</arg>
  30                 <arg choice="opt">-s &lt;configuration file&gt;</arg>
  31         </cmdsynopsis>
  32 </refsynopsisdiv>
  33
  34 <refsect1>
  35         <title>DESCRIPTION</title>
  36         <para>This program is part of the Samba suite.</para>
  37
  38         <para><command>nmbd</command> is a server that understands
  39         and can reply to NetBIOS over IP name service requests, like
  40         those produced by SMB/CIFS clients such as Windows 95/98/ME,
  41         Windows NT, Windows 2000, and LanManager clients. It also
  42         participates in the browsing protocols which make up the
  43         Windows "Network Neighborhood" view.</para>
  44
  45         <para>SMB/CIFS clients, when they start up, may wish to
  46         locate an SMB/CIFS server. That is, they wish to know what
  47         IP number a specified host is using.</para>
  48
  49         <para>Amongst other services, <command>nmbd</command> will
  50         listen for such requests, and if its own NetBIOS name is
  51         specified it will respond with the IP number of the host it
  52         is running on.  Its "own NetBIOS name" is by
  53         default the primary DNS name of the host it is running on,
  54         but this can be overridden with the <emphasis>-n</emphasis>
  55         option (see OPTIONS below). Thus <command>nmbd</command> will
  56         reply to broadcast queries for its own name(s). Additional
  57         names for <command>nmbd</command> to respond on can be set
  58         via parameters in the <ulink url="smb.conf.5.html"><filename>
  59         smb.conf(5)</filename></ulink> configuration file.</para>
  60
  61         <para><command>nmbd</command> can also be used as a WINS
  62         (Windows Internet Name Server) server. What this basically means
  63         is that it will act as a WINS database server, creating a
  64         database from name registration requests that it receives and
  65         replying to queries from clients for these names.</para>
  66
  67         <para>In addition, <command>nmbd</command> can act as a WINS
  68         proxy, relaying broadcast queries from clients that do
  69         not understand how to talk the WINS protocol to a WIN
  70         server.</para>
  71 </refsect1>
  72
  73 <refsect1>
  74         <title>OPTIONS</title>
  75
  76         <variablelist>
  77                 <varlistentry>
  78                 <term>-D</term>
  79                 <listitem><para>If specified, this parameter causes
  80                 <command>nmbd</command> to operate as a daemon. That is,
  81                 it detaches itself and runs in the background, fielding
  82                 requests on the appropriate port. By default, <command>nmbd</command>
  83                 will operate as a daemon if launched from a command shell.
  84                 nmbd can also be operated from the <command>inetd</command>
  85                 meta-daemon, although this is not recommended.
  86                 </para></listitem>
  87                 </varlistentry>
  88
  89                 <varlistentry>
  90                 <term>-a</term>
  91                 <listitem><para>If this parameter is specified, each new
  92                 connection will append log messages to the log file.
  93                 This is the default.</para></listitem>
  94                 </varlistentry>
  95
  96                 <varlistentry>
  97                 <term>-o</term>
  98                 <listitem><para>If this parameter is specified, the
  99                 log files will be overwritten when opened.  By default,
 100                 <command>smbd</command> will append entries to the log
 101                 files.</para></listitem>
 102                 </varlistentry>
 103
 104                 <varlistentry>
 105                 <term>-h</term>
 106                 <listitem><para>Prints the help information (usage)
 107                 for <command>nmbd</command>.</para></listitem>
 108                 </varlistentry>
 109
 110                 <varlistentry>
 111                 <term>-H &lt;filename&gt;</term>
 112                 <listitem><para>NetBIOS lmhosts file.  The lmhosts
 113                 file is a list of NetBIOS names to IP addresses that
 114                 is loaded by the nmbd server and used via the name
 115                 resolution mechanism <ulink url="smb.conf.5.html#nameresolveorder">
 116                 name resolve order</ulink> described in <ulink
 117                 url="smb.conf.5.html"> <filename>smb.conf(5)</filename></ulink>
 118                 to resolve any NetBIOS name queries needed by the server. Note
 119                 that the contents of this file are <emphasis>NOT</emphasis>
 120                 used by <command>nmbd</command> to answer any name queries.
 121                 Adding a line to this file affects name NetBIOS resolution
 122                 from this host <emphasis>ONLY</emphasis>.</para>
 123
 124                 <para>The default path to this file is compiled into
 125                 Samba as part of the build process. Common defaults
 126                 are <filename>/usr/local/samba/lib/lmhosts</filename>,
 127                 <filename>/usr/samba/lib/lmhosts</filename> or
 128                 <filename>/etc/lmhosts</filename>. See the <ulink url="lmhosts.5.html">
 129                 <filename>lmhosts(5)</filename></ulink> man page for details on the
 130                 contents of this file.</para></listitem>
 131                 </varlistentry>
 132
 133                 <varlistentry>
 134                 <term>-V</term>
 135                 <listitem><para>Prints the version number for
 136                 <command>nmbd</command>.</para></listitem>
 137                 </varlistentry>
 138
 139                 <varlistentry>
 140                 <term>-d &lt;debug level&gt;</term>
 141                 <listitem><para>debuglevel is an integer
 142                 from 0 to 10.  The default value if this parameter is
 143                 not specified is zero.</para>
 144
 145                 <para>The higher this value, the more detail will
 146                 be logged to the log files about the activities of the
 147                 server. At level 0, only critical errors and serious
 148                 warnings will be logged. Level 1 is a reasonable level for
 149                 day to day running - it generates a small amount of
 150                 information about operations carried out.</para>
 151
 152                 <para>Levels above 1 will generate considerable amounts
 153                 of log data, and should only be used when investigating
 154                 a problem. Levels above 3 are designed for use only by developers
 155                 and generate HUGE amounts of log data, most of which is extremely
 156                 cryptic.</para>
 157
 158                 <para>Note that specifying this parameter here will override
 159                 the <ulink url="smb.conf.5.html#loglevel">log level</ulink>
 160                 parameter in the <ulink url="smb.conf.5.html"><filename>
 161                 smb.conf</filename></ulink> file.</para></listitem>
 162                 </varlistentry>
 163
 164                 <varlistentry>
 165                 <term>-l &lt;log file&gt;</term>
 166                 <listitem><para>The -l parameter specifies a path
 167                 and base filename into which operational data from
 168                 the running <command>nmbd</command> server will
 169                 be logged.  The actual log file name is generated by
 170                 appending the extension ".nmb" to the specified base
 171                 name.  For example, if the name specified was "log"
 172                 then the file log.nmb would contain the debugging data.</para>
 173
 174                 <para>The default log file path is compiled into Samba as
 175                 part of the build process. Common defaults are <filename>
 176                 /usr/local/samba/var/log.nmb</filename>, <filename>
 177                 /usr/samba/var/log.nmb</filename> or
 178                 <filename>/var/log/log.nmb</filename>.</para></listitem>
 179                 </varlistentry>
 180
 181
 182                 <varlistentry>
 183                 <term>-n &lt;primary NetBIOS name&gt;</term>
 184                 <listitem><para>This option allows you to override
 185                 the NetBIOS name that Samba uses for itself. This is identical
 186                 to setting the <ulink url="smb.conf.5.html#netbiosname">
 187                 NetBIOS name</ulink> parameter in the <ulink url="smb.conf.5.html">
 188                 <filename>smb.conf</filename></ulink> file.  However, a command
 189                 line setting will take precedence over settings in
 190                 <filename>smb.conf</filename>.</para></listitem>
 191                 </varlistentry>
 192
 193
 194                 <varlistentry>
 195                 <term>-p &lt;UDP port number&gt;</term>
 196                 <listitem><para>UDP port number is a positive integer value.
 197                 This option changes the default UDP port number (normally 137)
 198                 that <command>nmbd</command> responds to name queries on. Don't
 199                 use this option unless you are an expert, in which case you
 200                 won't need help!</para></listitem>
 201                 </varlistentry>
 202
 203                 <varlistentry>
 204                 <term>-s &lt;configuration file&gt;</term>
 205                 <listitem><para>The default configuration file name
 206                 is set at build time, typically as <filename>
 207                 /usr/local/samba/lib/smb.conf</filename>, but
 208                 this may be changed when Samba is autoconfigured.</para>
 209
 210                 <para>The file specified contains the configuration details
 211                 required by the server. See <ulink url="smb.conf.5.html">
 212                 <filename>smb.conf(5)</filename></ulink> for more information.
 213                 </para></listitem>
 214                 </varlistentry>
 215         </variablelist>
 216 </refsect1>
 217
 218 <refsect1>
 219         <title>FILES</title>
 220
 221         <variablelist>
 222                 <varlistentry>
 223                 <term><filename>/etc/inetd.conf</filename></term>
 224                 <listitem><para>If the server is to be run by the
 225                 <command>inetd</command> meta-daemon, this file
 226                 must contain suitable startup information for the
 227                 meta-daemon. See the section INSTALLATION below.
 228                 </para></listitem>
 229                 </varlistentry>
 230
 231                 <varlistentry>
 232                 <term><filename>/etc/rc</filename></term>
 233                 <listitem><para>or whatever initialization script your
 234                 system uses).</para>
 235
 236                 <para>If running the server as a daemon at startup,
 237                 this file will need to contain an appropriate startup
 238                 sequence for the server. See the section INSTALLATION
 239                 below.</para></listitem>
 240                 </varlistentry>
 241
 242                 <varlistentry>
 243                 <term><filename>/etc/services</filename></term>
 244                 <listitem><para>If running the server via the
 245                 meta-daemon <command>inetd</command>, this file
 246                 must contain a mapping of service name (e.g., netbios-ssn)
 247                 to service port (e.g., 139) and protocol type (e.g., tcp).
 248                 See the section INSTALLATION below.</para></listitem>
 249                 </varlistentry>
 250
 251                 <varlistentry>
 252                 <term><filename>/usr/local/samba/lib/smb.conf</filename></term>
 253                 <listitem><para>This is the default location of the
 254                 <ulink url="smb.conf.5.html"><filename>smb.conf</filename></ulink>
 255                 server configuration file. Other common places that systems
 256                 install this file are <filename>/usr/samba/lib/smb.conf</filename>
 257                 and <filename>/etc/smb.conf</filename>.</para>
 258
 259                 <para>When run as a WINS server (see the
 260                 <ulink url="smb.conf.5.html#winssupport">wins support</ulink>
 261                 parameter in the <ulink url="smb.conf.5.html"><filename>
 262                 smb.conf(5)</filename></ulink> man page), <command>nmbd</command>
 263                 will store the WINS database in the file <filename>wins.dat</filename>
 264                 in the <filename>var/locks</filename> directory configured under
 265                 wherever Samba was configured to install itself.</para>
 266
 267                 <para>If <command>nmbd</command> is acting as a <emphasis>
 268                 browse master</emphasis> (see the <ulink
 269                 url="smb.conf.5.html#localmaster">local master</ulink>
 270                 parameter in the <ulink url="smb.conf.5.html"><filename>
 271                 smb.conf(5)</filename></ulink> man page), <command>nmbd</command>
 272                 will store the browsing database in the file <filename>browse.dat
 273                 </filename> in the <filename>var/locks</filename> directory
 274                 configured under wherever Samba was configured to install itself.
 275                 </para></listitem>
 276                 </varlistentry>
 277         </variablelist>
 278 </refsect1>
 279
 280 <refsect1>
 281         <title>SIGNALS</title>
 282
 283         <para>To shut down an <command>nmbd</command> process it is recommended
 284         that SIGKILL (-9) <emphasis>NOT</emphasis> be used, except as a last
 285         resort, as this may leave the name database in an inconsistent state.
 286         The correct way to terminate <command>nmbd</command> is to send it
 287         a SIGTERM (-15) signal and wait for it to die on its own.</para>
 288
 289         <para><command>nmbd</command> will accept SIGHUP, which will cause
 290         it to dump out its namelists into the file <filename>namelist.debug
 291         </filename> in the <filename>/usr/local/samba/var/locks</filename>
 292         directory (or the <filename>var/locks</filename> directory configured
 293         under wherever Samba was configured to install itself). This will also
 294         cause <command>nmbd</command> to dump out its server database in
 295         the <filename>log.nmb</filename> file.</para>
 296
 297         <para>The debug log level of nmbd may be raised or lowered using
 298         <ulink url="smbcontrol.1.html"><command>smbcontrol(1)</command>
 299         </ulink> (SIGUSR[1|2] signals are no longer used in Samba 2.2). This is
 300         to allow transient problems to be diagnosed, whilst still running
 301         at a normally low log level.</para>
 302 </refsect1>
 303
 304
 305 <refsect1>
 306         <title>VERSION</title>
 307
 308         <para>This man page is correct for version 2.2 of
 309         the Samba suite.</para>
 310 </refsect1>
 311
 312 <refsect1>
 313         <title>SEE ALSO</title>
 314         <para><command>inetd(8)</command>, <ulink
 315         url="smbd.8.html"><command>smbd(8)</command></ulink>,
 316         <ulink url="smb.conf.5.html"><filename>smb.conf(5)</filename>
 317         </ulink>, <ulink url="smbclient.1.html"><command>smbclient(1)
 318         </command></ulink>, <ulink url="testparm.1.html"><command>
 319         testparm(1)</command></ulink>, <ulink url="testprns.1.html">
 320         <command>testprns(1)</command></ulink>, and the Internet RFC's
 321         <filename>rfc1001.txt</filename>, <filename>rfc1002.txt</filename>.
 322         In addition the CIFS (formerly SMB) specification is available
 323         as a link from the Web page <ulink url="http://samba.org/cifs/">
 324         http://samba.org/cifs/</ulink>.</para>
 325 </refsect1>
 326
 327 <refsect1>
 328         <title>AUTHOR</title>
 329
 330         <para>The original Samba software and related utilities
 331         were created by Andrew Tridgell. Samba is now developed
 332         by the Samba Team as an Open Source project similar
 333         to the way the Linux kernel is developed.</para>
 334
 335         <para>The original Samba man pages were written by Karl Auer.
 336         The man page sources were converted to YODL format (another
 337         excellent piece of Open Source software, available at
 338         <ulink url="ftp://ftp.icce.rug.nl/pub/unix/">
 339         ftp://ftp.icce.rug.nl/pub/unix/</ulink>) and updated for the Samba 2.0
 340         release by Jeremy Allison.  The conversion to DocBook for
 341         Samba 2.2 was done by Gerald Carter</para>
 342 </refsect1>
 343
 344 </refentry>