1 IN.TFTPD(1M)                 Maintenance Commands                 IN.TFTPD(1M)
   2 
   3 
   4 
   5 NAME
   6        in.tftpd, tftpd - Internet Trivial File Transfer Protocol server
   7 
   8 SYNOPSIS
   9        in.tftpd [-d] [-T rexmtval] [-s] [homedir]
  10 
  11 
  12 DESCRIPTION
  13        tftpd is a server that supports the Internet Trivial File Transfer
  14        Protocol (TFTP).
  15 
  16 
  17        Before responding to a request, the server attempts to change its
  18        current directory to homedir; the default directory is /tftpboot.
  19 
  20 
  21        The use of tftp does not require an account or password on the remote
  22        system. Due to the lack of authentication information, in.tftpd will
  23        allow only publicly readable files to be accessed. Files may be written
  24        only if they already exist and are publicly writable. Note that this
  25        extends the concept of "public" to include all users on all hosts that
  26        can be reached through the network. This may not be appropriate on all
  27        systems, and its implications should be considered before enabling this
  28        service.
  29 
  30 
  31        in.tftpd runs with the user ID and group ID set to [GU]ID_NOBODY under
  32        the assumption that no files exist with that owner or group. However,
  33        nothing checks this assumption or enforces this restriction.
  34 
  35 OPTIONS
  36        -d
  37                       Debug. When specified it sets the SO_DEBUG socket
  38                       option.
  39 
  40 
  41        -s
  42                       Secure. When specified, the directory change to homedir
  43                       must succeed. The daemon also changes its root directory
  44                       to homedir.
  45 
  46 
  47        -T rexmtval
  48                       Specifies the value of the retransmission timeout in
  49                       seconds. This also affects the maximum session timeout
  50                       in that the latter is set to five times the
  51                       retransmission timeout value.
  52 
  53 
  54 USAGE
  55        The in.tftpd server is IPv6-enabled. See ip6(7P).
  56 
  57        in.tftpd supports transfers of greater than 32 MB, per RFC 2348.
  58 
  59 SEE ALSO
  60        svcs(1), tftp(1), inetadm(1M), inetd(1M), svcadm(1M), netconfig(4),
  61        attributes(5), smf(5), ip6(7P)
  62 
  63        Malkin, G. and Harkin, A. RFC 2347, TFTP Option Extension. The Internet
  64        Society. May 1998
  65 
  66 
  67        Malkin, G. and Harkin, A. RFC 2348, TFTP Blocksize Option. The Internet
  68        Society. May 1998
  69 
  70 
  71        Malkin, G. and Harkin, A. RFC 2349, TFTP Timeout Interval and Transfer
  72        Size Options. The Internet Society. May 1998
  73 
  74 
  75        Sollins, K.R. RFC 1350, The TFTP Protocol (Revision 2). Network Working
  76        Group. July 1992.
  77 
  78 NOTES
  79        The tftpd server only acknowledges the transfer size option that is
  80        sent with a read request when the octet transfer mode is specified.
  81 
  82        The in.tftpd.1m service is managed by the service management facility,
  83        smf(5), under the service identifier:
  84 
  85          svc:/network/tftp/udp6:default
  86 
  87 
  88 
  89 
  90        Administrative actions on this service, such as enabling, disabling, or
  91        requesting restart, can be performed using svcadm(1M). Responsibility
  92        for initiating and restarting this service is delegated to inetd(1M).
  93        Use inetadm(1M) to make configuration changes and to view configuration
  94        information for this service. The service's status can be queried using
  95        the svcs(1) command.
  96 
  97 
  98 
  99                                  June 17, 2015                    IN.TFTPD(1M)