Manual Pages for UNIX Darwin command on man nmbd

NMBD(8) NMBD(8)

NAME

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

to clients

SYNOPSIS

nnmmbbdd [-D] [-F] [-S] [-a] [-i] [-o] [-h] [-V] [-d ]

[-H ] [-l ] [-p ]

[-s ]

DESCRIPTION

This program is part of the ssaammbbaa(7) suite. nnmmbbdd is a server that understands and can reply to NetBIOS over IP name

service requests, like those produced by SMB/CIFS clients such as Win-

dows 95/98/ME, Windows NT, Windows 2000, Windows XP 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, nnmmbbdd 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 NetBIOS name" is by default the primary DNS name of the host it is running on, but this can be overridden by the netbios name in smb.conf. Thus nnmmbbdd will reply to broadcast queries for its own name(s). Additional names for nnmmbbdd to respond on can be set via parameters in the ssmmbb..ccoonnff(5) configuration file. nnmmbbdd 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 serv-

er, creating a database from name registration requests that it re-

ceives and replying to queries from clients for these names. In addition, nnmmbbdd can act as a WINS proxy, relaying broadcast queries from clients that do not understand how to talk the WINS protocol to a WINS server. OOPPTTIIOONNSS

-D If specified, this parameter causesnnmmbbdd to operate as a daemon.

That is, it detaches itself and runs in the background, fielding requests on the appropriate port. By default, nnmmbbdd will operate

as a daemon if launched from a command shell. nmbd can also be

operated from the iinneettdd meta-daemon, although this is not recom-

mended.

-F If specified, this parameter causes the main nnmmbbdd process to not

daemonize, i.e. double-fork and disassociate with the terminal.

Child processes are still created as normal to service each con-

nection request, but the main process does not exit. This opera-

tion mode is suitable for runningnnmmbbdd under process supervisors

such as ssuuppeerrvviissee and ssvvssccaann from Daniel J. Bernstein's ddaaeemmoonn-

ttoooollss package, or the AIX process monitor.

-S If specified, this parameter causesnnmmbbdd to log to standard out-

put rather than a file.

-i If this parameter is specified it causes the server to run "in-

teractively", not as a daemon, even if the server is executed on the command line of a shell. Setting this parameter negates the implicit daemon mode when run from the command line. nnmmbbdd also

logs to standard output, as if the -SS parameter had been given.

-h|-help

Print a summary of command line options.

-H

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 ssmmbb..ccoonnff(5) to resolve any NetBIOS name queries needed by the server. Note that the contents of this file are NNOOTT used by nnmmbbdd to answer any name queries. Adding a line to this file affects name NetBIOS resolution from this host OONNLLYY. The default path to this file is compiled into Samba as part of

the build process. Common defaults are /usr/local/sam-

ba/lib/lmhosts,/usr/samba/lib/lmhosts or/etc/samba/lmhosts. See the llmmhhoossttss(5) man page for details on the contents of this file.

-V Prints the program version number.

-s

The file specified contains the configuration details required

by the server. The information in this file includes server-spe-

cific information such as what printcap file to use, as well as descriptions of all the services that the server is to provide. See smb.conf for more information. The default configuration file name is determined at compile time.

-d|-debug=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 to the log

files about the activities of the server. At level 0, only crit-

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

-l|-logfile=logdirectory

Base directory name for log/debug files. The extension ""..pprroogg-

nnaammee"" will be appended (e.g. log.smbclient, log.smbd, etc...). The log file is never removed by the client.

-p

UDP port number is a positive integer value. This option changes the default UDP port number (normally 137) that nnmmbbdd responds to name queries on. Don't use this option unless you are an expert, in which case you won't need help! FILES /etc/inetd.conf

If the server is to be run by theiinneettdd meta-daemon, this file

must contain suitable startup information for the meta-daemon.

/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. /etc/services

If running the server via the meta-daemon iinneettdd, 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). /usr/local/samba/lib/smb.conf

This is the default location of the ssmmbb..ccoonnff(5) server configu-

ration file. Other common places that systems install this file are /usr/samba/lib/smb.conf and /etc/samba/smb.conf. When run as a WINS server (see thewins support parameter in the ssmmbb..ccoonnff(5) man page),nnmmbbdd will store the WINS database in the

file wins.dat in the var/locks directory configured under wher-

ever Samba was configured to install itself.

If nnmmbbdd is acting as a bbrroowwssee mmaasstteerr (see the local master pa-

rameter in the ssmmbb..ccoonnff(5) man page, nnmmbbdd will store the brows-

ing database in the file browse.dat in the var/locks directory

configured under wherever Samba was configured to install it-

self. SSIIGGNNAALLSS

To shut down an nnmmbbdd process it is recommended that SIGKILL (-9) NNOOTT be

used, except as a last resort, as this may leave the name database in an inconsistent state. The correct way to terminate nnmmbbdd is to send it

a SIGTERM (-15) signal and wait for it to die on its own.

nnmmbbdd will accept SIGHUP, which will cause it to dump out its namelists

into the file namelist.debug in the /usr/local/samba/var/locks direc-

tory (or the var/locks directory configured under wherever Samba was configured to install itself). This will also cause nnmmbbdd to dump out its server database in the log.nmb file.

The debug log level of nmbd may be raised or lowered using ssmmbbccoonn-

ttrrooll(1) (SIGUSR[1|2] signals are no longer used since Samba 2.2). This is to allow transient problems to be diagnosed, whilst still running at a normally low log level. VVEERRSSIIOONN This man page is correct for version 3.0 of the Samba suite.