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tftpd(8)
NAME
  tftpd - The DARPA Trivial File Transfer Protocol (TFTP) server

SYNOPSIS
  /usr/sbin/tftpd [-b] [-d] [-r pathname] [-t interval] [directory...]

OPTIONS
  -b  Instructs tftpd to not respond to broadcast requests.

  -d  Specifies that the name of the file and other debug information is sent
      to syslogd.

  -r pathname
      Specifies the relative pathname a user can specify to transfer a file
      that has no path associated with it.  For example, -r /tmp/tftp causes
      /tmp/tftp to be prefixed to a file that has no path and the file is
      copied to and from the directory /tmp/tftp.  Only one directory path
      can be specified with this option.

  -t interval
      Specifies the amount of time, in seconds, that tftpd waits before it
      recognizes a connection timeout.	The default interval is 25 seconds.

DESCRIPTION
  The tftpd daemon is a server that supports the DARPA (Defense Advanced
  Research Projects Agency) Trivial File Transfer Protocol and complies with
  RFC-1350, RFC-1782, and RFC-1783.  The TFTP server operates at the port
  indicated in the tftp service description; see services(4) for more
  information. The server is normally started by inetd.

  Using the tftp command does not require an account or password on the
  remote system. Due to the lack of authentication information, the tftpd
  daemon will allow only publicly readable files to be accessed. Files
  containing the string /../ or starting with ../ are not allowed. Files can
  be written only if they already exist and are publicly writable. 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 implication should be considered before enabling tftp
  service. The server should have the user ID with the lowest possible
  privilege.

  Access to files may be restricted by invoking the tftpd daemon with a list
  of directories and including pathnames as server program arguments in the
  /etc/inetd.conf file. In this case, access is restricted to files whose
  names are prefixed by the one of the given directories.

  The tftpd daemon validates the files that it has to transfer against the
  /etc/tftptab file. If you are transferring files that are not publicly
  readable or not in the directories listed on the command line, you must
  make certain that those files are listed in the /etc/tftptab file.

  The tftpd daemon also supports the TFTP blocksize option and option
  extension that enables it to transfer files using blocksizes greater than
  512 bytes (maximum is 65464 bytes).

RESTRICTIONS
  The maximum number of directories allowed in the directory list are 62. The
  maximum number of files allowed in /etc/tftptab file is 256.

FILES
  /usr/sbin/tftpd
      Specifies the command path.

SEE ALSO
  Commands: tftp(1)

  Daemons: inetd(8)

  RFC 1782, TFTP Option Extension; G. Malkin, A. Harkin; March 1995.

  RFC 1783, TFTP Blocksize Option; G. Malkin, A. Harkin; March 1995

Index for Section 8

Alphabetical listing for T

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