in.tftpd(1M)

NAME

     in.tftpd, tftpd - Internet Trivial  File  Transfer  Protocol
     server

SYNOPSIS

     in.tftpd [-s] [homedir]

DESCRIPTION

     tftpd is a server that supports the  Internet  Trivial  File
     Transfer Protocol (TFTP). This server is normally started by
     inetd(1M) and operates at the port  indicated  in  the  tftp
     Internet service description in the /etc/inetd.conf file. By
     default, the entry for in.tftpd in  etc/inetd.conf  is  com-
     mented  out.  To  make  in.tftpd  operational,  the  comment
     character(s)  must   be   deleted   from   the   file.   See
     inetd.conf(4).

     Before responding to  a  request,  the  server  attempts  to
     change  its current directory to homedir; the default direc-
     tory is /tftpboot.

     The use of tftp does not require an account or  password  on
     the  remote system. Due to the lack of authentication infor-
     mation, in.tftpd will allow only publicly readable files  to
     be accessed. Files may be written only if they already exist
     and are publicly writable.  Note that this extends the  con-
     cept  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 this service.

     in.tftpd  runs  with  the  user  ID  and  group  ID  set  to
     [GU]ID_NOBODY  under the assumption that no files exist with
     that owner or group.  However, nothing checks  this  assump-
     tion or enforces this restriction.

OPTIONS

     -d    Debug. When specified  it  sets  the  SO_DEBUG  socket
           option.

     -s    Secure.   When  specified,  the  directory  change  to
           homedir must succeed. The daemon also changes its root
           directory to homedir.

FILES

     /etc/inetd.conf

USAGE

     The in.tftpd server is IPv6-enabled. See ip6(7P).

ATTRIBUTES

     See attributes(5) for descriptions of the  following  attri-
     butes:

     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | Availability                | SUNWtftp                    |
    |_____________________________|_____________________________|

SEE ALSO

     tftp(1),  inetd(1M),  inetd.conf(4),  netconfig(4),   attri-
     butes(5), ip6(7P)

     Malkin, G. and Harkin, A. RFC 2347, TFTP  Option  Extension.
     The Internet Society. May 1998

     Malkin, G. and Harkin, A. RFC 2348, TFTP  Blocksize  Option.
     The Internet Society. May 1998

     Malkin, G. and Harkin, A. RFC 2349,  TFTP  Timeout  Interval
     and Transfer Size Options. The Internet Society. May 1998

     Sollins, K.R. RFC 1350,  The  TFTP  Protocol  (Revision  2).
     Network Working Group. July 1992.

NOTES

     The tftpd server only acknowledges the transfer size  option
     that  is  sent  with  a read request when the octet transfer
     mode is specified.