TFTPD(ADMN)                                UNIX System V



     Name
          tftpd - DARPA Trivial File Transfer Protocol server


     Syntax
          /etc/tftpd


     Description
          tftpd is a server  that  supports  the  DARPA  Trivial  File
          Transfer  Protocol.   The  TFTP  server operates at the port
          indicated   in   the   tftp   service    description;    see
          services(SFF).   This  port  number  may  be overridden (for
          debugging purposes) by  specifying  a  port  number  on  the
          command line.

          The use of tftp does not require an account or  password  on
          the  remote  system.   Due  to  the  lack  of authentication
          information, tftpd will allow only publicly  readable  files
          to  be  accessed.   Note  that  this  extends the concept of
          public to include all users on all hosts that can be reached
          through  the  network;  this  may  not be appropriate on all
          systems, and its implications should  be  considered  before
          enabling tftp service.

          tftpd is spawned by the superserver  inetd  and,  therefore,
          must   have   an   entry   in  inetd's  configuration  file,
          /etc/inetd.conf.   [See  inetd(ADMN)  and  inetd.conf(SFF).]
          Note  that  the  tftpd  entry in this file must be ``wait'':
          this is to prevent subsequent selects from being  successful
          before  the  first  tftpd  process  does its receive.  tftpd
          takes care to prevent multiple tftpd  processes  from  being
          spawned  to  service  the  same  request.  (inetd is able to
          continue processing new messages on the port.)

     See Also
          inetd(ADMN), tftp(TC), inetd.conf(SFF), services(SFF).


     Warnings
          This server is known only to be self-consistent (that is, it
          operates with the user TFTP program tftp(TC)).

          The search permissions of the  directories  leading  to  the
          files  accessed  are  not checked if tftp runs as root.  The
          default configuration runs tftpd as user ``sync.''


     (printed 8/17/89)                                  TFTPD(ADMN)