1.\" Copyright (c) 1983, 1991 The Regents of the University of California. 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 3. All advertising materials mentioning features or use of this software 13.\" must display the following acknowledgement: 14.\" This product includes software developed by the University of 15.\" California, Berkeley and its contributors. 16.\" 4. Neither the name of the University nor the names of its contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" from: @(#)tftpd.8 6.7 (Berkeley) 5/13/91 33.\" $Id: tftpd.8,v 1.3 1994/01/10 16:29:46 mycroft Exp $ 34.\" 35.Dd May 13, 1991 36.Dt TFTPD 8 37.Os BSD 4.2 38.Sh NAME 39.Nm tftpd 40.Nd 41.Tn DARPA 42Trivial File Transfer Protocol server 43.Sh SYNOPSIS 44.Nm tftpd 45.Op Ar directory ... 46.Nm tftpd 47.Fl s 48.Op Ar directory 49.Sh DESCRIPTION 50.Nm Tftpd 51is a server which supports the 52.Tn DARPA 53Trivial File Transfer 54Protocol. 55The 56.Tn TFTP 57server operates 58at the port indicated in the 59.Ql tftp 60service description; 61see 62.Xr services 5 . 63The server is normally started by 64.Xr inetd 8 . 65.Pp 66The use of 67.Xr tftp 1 68does not require an account or password on the remote system. 69Due to the lack of authentication information, 70.Nm tftpd 71will allow only publicly readable files to be 72accessed. 73Files may be written only if they already exist and are publicly writable. 74Note that this extends the concept of 75.Dq public 76to include 77all users on all hosts that can be reached through the network; 78this may not be appropriate on all systems, and its implications 79should be considered before enabling tftp service. 80The server should have the user ID with the lowest possible privilege. 81.Pp 82Access to files may be restricted by invoking 83.Nm tftpd 84with a list of directories by including pathnames 85as server program arguments in 86.Pa /etc/inetd.conf . 87In this case access is restricted to files whose 88names are prefixed by the one of the given directories. 89.Pp 90When using the 91.Fl s 92flag with a directory name, tftpd will 93.Xr chroot 2 94on startup; therefore the remote host is not expected to pass the directory 95as part of the file name to transfer. This option is intended primarily for 96compatibility with SunOS boot ROMs which do not include a directory name. 97.Sh SEE ALSO 98.Xr tftp 1 , 99.Xr inetd 8 100.Sh HISTORY 101The 102.Nm 103command appeared in 104.Bx 4.2 . 105.Pp 106The 107.Fl s 108flag appeared in NetBSD 0.9a. 109