nbd(ADMN)                                                          nbd(ADMN)


 Name

    nbd - NetBIOS daemon

 Syntax

    /etc/nbd

 Description

    /etc/nbd initializes NetBIOS, then remains active to create new TCP end-
    points for NetBIOS and recycle used ones.  NetBIOS initialization con-
    sists of performing an ioctl to set certain configuration parameters and
    linking UDP and TCP endpoints to NetBIOS. Two UDP endpoints and one TCP
    endpoint are used for the name, datagram, and session services, respec-
    tively.  Each NetBIOS session requires one TCP endpoint. As sessions ter-
    minate, their TCP endpoints are unlinked.  From time to time, new TCP
    endpoints must be linked to NetBIOS to use for new sessions.  The daemon
    listens for messages from NetBIOS instructing it to unlink certain end-
    points and/or provide new ones.

    Certain NetBIOS configuration parameters are set by /etc/nbd from the
    values of a set of environment variables.  /etc/nbd executes getenv(S) to
    obtain these variables.  If all variables are not found, /etc/nbd fails.
    These variables are:

    NBADDR       Internet address of interface to be used (in dot notation)

    NBBROADCAST  Internet broadcast address to use (in dot notation)

    NBMAXPKT     Maximum IP datagram size to avoid fragmentation

    NBSCOPE      NetBIOS scope name string (fully-qualified domain name
                  string, e.g. i88.isc.com; NetBIOS names are qualified by
                  this domain name)

    NBDFLTNCB    Default maximum number of pending NetBIOS Control Blocks
                  (NCBs) per NetBIOS user environment

    NBDFLTSSN    Default maximum number of active sessions per NetBIOS user
                  environment

    NBMAXNAME    Maximum number of names a user may register

    NBMAXNCB     Limit on the allowed number of NCBs configured

    NBMAXSSN     Limit on the allowed number of sessions configured

    The script /etc/netbios reads some of these parameters from a configura-
    tion file and determines others from the environment, then runs /etc/nbd
    (see netbios(ADMN).)

 Files

    /dev/netbios    NetBIOS device node

 See also

    netbios(ADMP) and netbios(ADMN).