1mailto(samba@samba.org) 2 3manpage(nmbd)(8)(23 Oct 1998)(Samba)(SAMBA) 4 5label(NAME) 6manpagename(nmbd)(NetBIOS name server to provide NetBIOS over IP 7naming services to clients) 8 9label(SYNOPSIS) 10manpagesynopsis() 11 12bf(nmbd) [link(-D)(minusD)] [link(-a)(minusa)] [link(-o)(minuso)] [link(-h)(minush)] [link(-V)(minusV)] [link(-H lmhosts file)(minusH)] [link(-d debuglevel)(minusd)] [link(-l log file basename)(minusl)] [link(-n primary NetBIOS name)(minusn)] [link(-p port number)(minusp)] [link(-s configuration file)(minuss)] 13 14label(DESCRIPTION) 15manpagedescription() 16 17This program is part of the bf(Samba) suite. 18 19bf(nmbd) is a server that understands and can reply to NetBIOS over IP 20name service requests, like those produced by SMBD/CIFS clients such 21as Windows 95/98, Windows NT and LanManager clients. It also 22participates in the browsing protocols which make up the Windows 23"Network Neighborhood" view. 24 25SMB/CIFS clients, when they start up, may wish to locate an SMB/CIFS 26server. That is, they wish to know what IP number a specified host is 27using. 28 29Amongst other services, bf(nmbd) will listen for such requests, 30and if its own NetBIOS name is specified it will respond with the IP 31number of the host it is running on. Its "own NetBIOS name" is by 32default the primary DNS name of the host it is running on, but this 33can be overridden with the bf(-n) option (see link(OPTIONS)(OPTIONS) below). Thus 34bf(nmbd) will reply to broadcast queries for its own name(s). Additional 35names for bf(nmbd) to respond on can be set via parameters in the 36url(bf(smb.conf(5)))(smb.conf.5.html) configuration file. 37 38bf(nmbd) can also be used as a WINS (Windows Internet Name Server) 39server. What this basically means is that it will act as a WINS 40database server, creating a database from name registration requests 41that it receives and replying to queries from clients for these names. 42 43In addition, bf(nmbd) can act as a WINS proxy, relaying broadcast queries 44from clients that do not understand how to talk the WINS protocol to a 45WIN server. 46 47label(OPTIONS) 48manpageoptions() 49 50startdit() 51 52label(minusD) 53dit(bf(-D)) If specified, this parameter causes bf(nmbd) to operate 54as a daemon. That is, it detaches itself and runs in the background, 55fielding requests on the appropriate port. By default, bf(nmbd) will 56NOT operate as a daemon. nmbd can also be operated from the inetd 57meta-daemon, although this is not recommended. 58 59label(minusa) 60dit(bf(-a)) If this parameter is specified, each new connection will 61append log messages to the log file. This is the default. 62 63label(minuso) 64dit(bf(-o)) If this parameter is specified, the log files will be 65overwritten when opened. By default, the log files will be appended 66to. 67 68label(minush) 69dit(bf(-h)) Prints the help information (usage) for bf(nmbd). 70 71label(minusV) 72dit(bf(-V)) Prints the version number for bf(nmbd). 73 74label(minusH) 75dit(bf(-H filename)) NetBIOS lmhosts file. 76 77The lmhosts file is a list of NetBIOS names to IP addresses that is 78loaded by the nmbd server and used via the name resolution mechanism 79url(bf(name resolve order))(smb.conf.5.html#nameresolveorder) described in 80url(bf(smb.conf (5)))(smb.conf.5.html) to resolve any 81NetBIOS name queries needed by the server. Note that the contents of 82this file are em(NOT) used by bf(nmbd) to answer any name queries. Adding 83a line to this file affects name NetBIOS resolution from this host 84em(ONLY). 85 86The default path to this file is compiled into Samba as part of the 87build process. Common defaults are em(/usr/local/samba/lib/lmhosts), 88em(/usr/samba/lib/lmhosts) or em(/etc/lmhosts). See the 89url(bf(lmhosts (5)))(lmhosts.5.html) man page for details on the contents of this file. 90 91label(minusd) 92dit(bf(-d debuglevel)) debuglevel is an integer from 0 to 10. 93 94The default value if this parameter is not specified is zero. 95 96The higher this value, the more detail will be logged to the log files 97about the activities of the server. At level 0, only critical errors 98and serious warnings will be logged. Level 1 is a reasonable level for 99day to day running - it generates a small amount of information about 100operations carried out. 101 102Levels above 1 will generate considerable amounts of log data, and 103should only be used when investigating a problem. Levels above 3 are 104designed for use only by developers and generate HUGE amounts of log 105data, most of which is extremely cryptic. 106 107Note that specifying this parameter here will override the url(bf(log 108level))(smb.conf.5.html#loglevel) parameter in the url(bf(smb.conf 109(5)))(smb.conf.5.html) file. 110 111label(minusl) 112dit(bf(-l logfile)) The bf(-l) parameter specifies a path and base 113filename into which operational data from the running nmbd server will 114be logged. The actual log file name is generated by appending the 115extension ".nmb" to the specified base name. For example, if the name 116specified was "log" then the file log.nmb would contain the debugging 117data. 118 119The default log file path is compiled into Samba as part of the 120build process. Common defaults are em(/usr/local/samba/var/log.nmb), 121em(/usr/samba/var/log.nmb) or em(/var/log/log.nmb). 122 123label(minusn) 124dit(bf(-n primary NetBIOS name)) This option allows you to override 125the NetBIOS name that Samba uses for itself. This is identical to 126setting the url(bf(NetBIOS name))(smb.conf.5.html#netbiosname) parameter 127in the url(bf(smb.conf))(smb.conf.5.html) file 128but will override the setting in the url(bf(smb.conf))(smb.conf.5.html) file. 129 130label(minusp) 131dit(bf(-p UDP port number)) UDP port number is a positive integer value. 132 133This option changes the default UDP port number (normally 137) that 134bf(nmbd) responds to name queries on. Don't use this option unless you are 135an expert, in which case you won't need help! 136 137label(minuss) 138dit(bf(-s configuration file)) The default configuration file name is 139set at build time, typically as em(/usr/local/samba/lib/smb.conf), but 140this may be changed when Samba is autoconfigured. 141 142The file specified contains the configuration details required by the 143server. See url(bf(smb.conf (5)))(smb.conf.5.html) for more information. 144 145endit() 146 147label(FILES) 148manpagefiles() 149 150bf(/etc/inetd.conf) 151 152If the server is to be run by the inetd meta-daemon, this file must 153contain suitable startup information for the meta-daemon. 154 155bf(/etc/rc) 156 157(or whatever initialization script your system uses). 158 159If running the server as a daemon at startup, this file will need to 160contain an appropriate startup sequence for the server. 161 162bf(/usr/local/samba/lib/smb.conf) 163 164This is the default location of the 165url(bf(smb.conf))(smb.conf.5.html) server configuration 166file. Other common places that systems install this file are 167em(/usr/samba/lib/smb.conf) and em(/etc/smb.conf). 168 169When run as a bf(WINS) server (see the url(bf(wins support))(smb.conf.5.html#winssupport) 170parameter in the url(bf(smb.conf (5)))(smb.conf.5.html) man page), bf(nmbd) will 171store the WINS database in the file tt(wins.dat) in the tt(var/locks) directory 172configured under wherever Samba was configured to install itself. 173 174If bf(nmbd) is acting as a bf(browse master) (see the url(bf(local master))(smb.conf.5.html#localmaster) 175parameter in the url(bf(smb.conf (5)))(smb.conf.5.html) man page), bf(nmbd) will 176store the browsing database in the file tt(browse.dat) in the tt(var/locks) directory 177configured under wherever Samba was configured to install itself. 178 179label(SIGNALS) 180manpagesection(SIGNALS) 181 182To shut down an bf(nmbd) process it is recommended that SIGKILL (-9) 183em(NOT) be used, except as a last resort, as this may leave the name 184database in an inconsistent state. The correct way to terminate 185bf(nmbd) is to send it a SIGTERM (-15) signal and wait for it to die on 186its own. 187 188bf(nmbd) will accept SIGHUP, which will cause it to dump out it's 189namelists into the file tt(namelist.debug) in the 190em(/usr/local/samba/var/locks) directory (or the em(var/locks) 191directory configured under wherever Samba was configured to install 192itself). This will also cause bf(nmbd) to dump out it's server database in 193the log.nmb file. In addition, the debug log level of nmbd may be raised 194by sending it a SIGUSR1 (tt(kill -USR1 <nmbd-pid>)) and lowered by sending it a 195SIGUSR2 (tt(kill -USR2 <nmbd-pid>)). This is to allow transient 196problems to be diagnosed, whilst still running at a normally low log 197level. 198 199label(VERSION) 200manpagesection(VERSION) 201 202This man page is correct for version 2.0 of the Samba suite. 203 204label(SEEALSO) 205manpageseealso() 206 207bf(inetd (8)), url(bf(smbd (8)))(smbd.8.html), url(bf(smb.conf 208(5)))(smb.conf.5.html), url(bf(smbclient (1)))(smbclient.1.html), 209url(bf(testparm (1)))(testparm.1.html), url(bf(testprns 210(1)))(testprns.1.html), and the Internet RFC's bf(rfc1001.txt), 211bf(rfc1002.txt). In addition the CIFS (formerly SMB) specification is 212available as a link from the Web page : 213url(http://samba.org/cifs/)(http://samba.org/cifs/). 214 215label(AUTHOR) 216manpageauthor() 217 218The original Samba software and related utilities were created by 219Andrew Tridgell email(samba@samba.org). Samba is now developed 220by the Samba Team as an Open Source project similar to the way the 221Linux kernel is developed. 222 223The original Samba man pages were written by Karl Auer. The man page 224sources were converted to YODL format (another excellent piece of Open 225Source software, available at 226url(bf(ftp://ftp.icce.rug.nl/pub/unix/))(ftp://ftp.icce.rug.nl/pub/unix/)) 227and updated for the Samba2.0 release by Jeremy Allison. 228email(samba@samba.org). 229 230See url(bf(samba (7)))(samba.7.html) to find out how to get a full 231list of contributors and details on how to submit bug reports, 232comments etc. 233