TFTPD(8)                    System Manager's Manual                   TFTPD(8)

NAME
     tftpd - Internet Trivial File Transfer Protocol server

SYNOPSIS
     tftpd [-clns] [directory ...]

DESCRIPTION
     Tftpd is a server which supports the Internet Trivial File Transfer Pro-
     tocol (RFC 783). The TFTP server operates at the port indicated in the
     `tftp' service description; see services(5).  The server is normally
     started by inetd(8).

     The use of tftp(1) 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.  Files containing the string
     ``/../'' are not allowed.  Files may 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 implica-
     tions 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 tftpd with a list of direc-
     tories by including up to 20 pathnames as server program arguments in
     /etc/inetd.conf.  In this case access is restricted to files whose names
     are prefixed by the one of the given directories.  The given directories
     are also treated as a search path for relative filename requests.

     The options are:

     -c      If the -c flag is used, tftpd will allow new files to be created;
             otherwise uploaded files must already exist.  Files are created
             with default permissions allowing anyone to read or write to
             them.

     -l      Logs all requests using syslog(3).

     -n      Suppresses negative acknowledgement of requests for nonexistent
             relative filenames.

     -s      When using the -s flag with a directory name, tftpd will
             chroot(2) on startup; therefore the remote host is not expected
             to pass the directory as part of the file name to transfer.  This
             option is intended primarily for compatibility with SunOS boot
             ROMs which do not include a directory name. Only one directory
             name can be given with this option.

     -u username
             Switch to another user named username instead inheriting the user
             from inetd. This can provide additional security when the named
             user has very low privilege and access.

SEE ALSO
     ftpd(8), tftp(1), inetd(8)

HISTORY
     The tftpd command appeared in 4.2BSD.

Interix                        November 13, 2007                       Interix