Ubuntu Feisty 7.04 manual page repository

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Provided by: netkit-inetd_0.10-10.3ubuntu4_i386



      inetd.conf - Internet servers database


      Upon execution, inetd reads its configuration information from a configu‐
      ration file which, by default, is /etc/inetd.conf.  There must be an
      entry for each field of the configuration file, with entries for each
      field separated by a tab or a space.  Comments are denoted by a ‘‘#’’ at
      the beginning of a line.  There must be an entry for each field.  The
      fields of the configuration file are as follows:
            service name
            socket type
            server program
            server program arguments
      To specify an Sun-RPC based service, the entry would contain these
            service name/version
            socket type
            server program
            server program arguments
      The service-name entry is the name of a valid service in the file
      /etc/services.  For “internal” services (discussed below), the service
      name must be the official name of the service (that is, the first entry
      in /etc/services).  When used to specify a Sun-RPC based service, this
      field is a valid RPC service name in the file /etc/rpc.  The part on the
      right of the “/” is the RPC version number. This can simply be a single
      numeric argument or a range of versions.  A range is bounded by the low
      version to the high version - “rusers/1-3”.
      The socket-type should be one of “stream”, “dgram”, “raw”, “rdm”, or
      “seqpacket”, depending on whether the socket is a stream, datagram, raw,
      reliably delivered message, or sequenced packet socket.
      The protocol must be a valid protocol as given in /etc/protocols.  Exam‐
      ples might be “tcp” or “udp”.  Rpc based services are specified with the
      “rpc/tcp” or “rpc/udp” service type.
      The wait/nowait entry is applicable to datagram sockets only (other sock‐
      ets should have a “nowait” entry in this space).  If a datagram server
      connects to its peer, freeing the socket so inetd can received further
      messages on the socket, it is said to be a “multi-threaded” server, and
      should use the “nowait” entry.  For datagram servers which process all
      incoming datagrams on a socket and eventually time out, the server is
talkd(8) are both examples of the latter type of datagram
Tftpd(8) is an exception; it is a datagram server that estab‐
      lishes pseudo-connections.  It must be listed as “wait” in order to avoid
      a race; the server reads the first packet, creates a new socket, and then
      forks and exits to allow inetd to check for new service requests to spawn
      new servers.  The optional “max” suffix (separated from “wait” or
      “nowait” by a dot) specifies the maximum number of server instances that
      may be spawned from inetd within an interval of 60 seconds. When omitted,
      “max” defaults to 40.
      The user entry should contain the user name of the user as whom the
      server should run.  This allows for servers to be given less permission
      than root. An optional group name can be specified by appending a dot to
      the user name followed by the group name. This allows for servers to run
      with a different (primary) group id than specified in the password file.
      If a group is specified and user is not root, the supplementary groups
      associated with that user will still be set.
      The server-program entry should contain the pathname of the program which
      is to be executed by inetd when a request is found on its socket.  If
      inetd provides this service internally, this entry should be “internal”.
      The server program arguments should be just as arguments normally are,
      starting with argv[0], which is the name of the program.  If the service
      is provided internally, the word “internal” should take the place of this
      Inetd provides several “trivial” services internally by use of routines
      within itself.  These services are “echo”, “discard”, “chargen” (charac‐
      ter generator), “daytime” (human readable time), and “time” (machine
      readable time, in the form of the number of seconds since midnight, Jan‐
      uary 1, 1900).  All of these services are tcp based.  For details of
      these services, consult the appropriate RFC from the Network Information


      Lines in inetd.conf are limited to a maximum length of 1022 characters.


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