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contrib/tftp/tftpd.8

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+.\" Copyright (c) 1983 The Regents of the University of California.
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms are permitted
+.\" provided that the above copyright notice and this paragraph are
+.\" duplicated in all such forms and that any documentation,
+.\" advertising materials, and other materials related to such
+.\" distribution and use acknowledge that the software was developed
+.\" by the University of California, Berkeley.  The name of the
+.\" University may not be used to endorse or promote products derived
+.\" from this software without specific prior written permission.
+.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+.\" IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+.\" WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+.\"
+.\"	@(#)tftpd.8	6.3 (Berkeley) 9/20/88
+.\"
+.TH TFTPD 8 "September 20, 1988"
+.UC 5
+.SH NAME
+tftpd \- DARPA Trivial File Transfer Protocol server
+.SH SYNOPSIS
+.B /etc/tftpd
+[
+.SM \-c
+<rootdir> ] [
+.SM \-d
+] [
+.SM \-r
+<filter> ]
+.SH DESCRIPTION
+.I Tftpd
+is a server which supports the DARPA Trivial File Transfer
+Protocol.
+The TFTP server operates
+at the port indicated in the ``tftp'' service description;
+see
+.IR services (5).
+The server is normally started by
+.IR inetd (8).
+.PP
+The use of
+.I tftp
+does not require an account or password on the remote system.
+Due to the lack of authentication information, 
+.I 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 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 implications
+should be considered before enabling tftp service.
+The server should have the user ID with the lowest possible privilege.
+.SH OPTIONS
+.TP
+.B \-c
+Pathname of a directory that is considered the rootdirectory for all
+transfers. N.B.
+.I tftpd
+does not actually perform a
+.IR chroot (2)
+call; you should be aware of the security implications and you
+probably should run the server from an unpriviledged account.
+.TP
+.B \-d
+Increased debugging level.
+.TP
+.B \-r
+Pathname of a file that is considered to be a filter program. Whenever
+a client tries to download this file, the filter will be started and
+its output is send to the client. An arbitrary amount of these
+filters can be specified.
+.SH "SEE ALSO"
+tftp(1), inetd(8)