[apple/network_cmds.git] / tftpd.tproj / tftpd.8

.\" Copyright (c) 1983, 1991, 1993
.\"	The Regents of the University of California.  All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\"    notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\"    notice, this list of conditions and the following disclaimer in the
.\"    documentation and/or other materials provided with the distribution.
.\" 3. All advertising materials mentioning features or use of this software
.\"    must display the following acknowledgement:
.\"	This product includes software developed by the University of
.\"	California, Berkeley and its contributors.
.\" 4. Neither the name of the University nor the names of its contributors
.\"    may be used to endorse or promote products derived from this software
.\"    without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\"	@(#)tftpd.8	8.1 (Berkeley) 6/4/93
.\"
.Dd June 4, 1993
.Dt TFTPD 8
.Os BSD 4.2
.Sh NAME
.Nm tftpd
.Nd
Internet Trivial File Transfer Protocol server
.Sh SYNOPSIS
.Nm tftpd
.Op Fl l
.Op Fl n
.Op Ar directory ...
.Sh DESCRIPTION
.Nm Tftpd
is a server which supports the
Internet Trivial File Transfer
Protocol (\c
.Tn RFC 783).
The
.Tn TFTP
server operates
at the port indicated in the
.Ql tftp
service description;
see
.Xr services 5 .
The server is normally started by
.Xr inetd 8 .
.Pp
The use of
.Xr tftp 1
does not require an account or password on the remote system.
Due to the lack of authentication information, 
.Nm tftpd
will allow only publicly readable files to be
accessed.
Files containing the string ``/\|\fB.\|.\fP\|/'' are not allowed.
Files may be written only if they already exist and are publicly writable.
Note that this extends the concept of
.Dq 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.
.Pp
Access to files may be restricted by invoking
.Nm tftpd
with a list of directories by including up to 20 pathnames
as server program arguments in
.Pa /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.
.Pp
The options are:
.Bl -tag -width Ds
.It Fl l
Logs all requests using
.Xr syslog 3 .
.It Fl n
Suppresses negative acknowledgement of requests for nonexistent
relative filenames.
.El
.Sh SEE ALSO
.Xr tftp 1 ,
.Xr inetd 8
.Sh HISTORY
The
.Nm
command appeared in
.Bx 4.2 .
Commit	Line	Data
b7080c8e A	1	.\" Copyright (c) 1983, 1991, 1993
	2	.\" The Regents of the University of California. 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	.\" @(#)tftpd.8 8.1 (Berkeley) 6/4/93
	33	.\"
	34	.Dd June 4, 1993
	35	.Dt TFTPD 8
	36	.Os BSD 4.2
	37	.Sh NAME
	38	.Nm tftpd
	39	.Nd
	40	Internet Trivial File Transfer Protocol server
	41	.Sh SYNOPSIS
	42	.Nm tftpd
	43	.Op Fl l
	44	.Op Fl n
	45	.Op Ar directory ...
	46	.Sh DESCRIPTION
	47	.Nm Tftpd
	48	is a server which supports the
	49	Internet Trivial File Transfer
	50	Protocol (\c
	51	.Tn RFC 783).
	52	The
	53	.Tn TFTP
	54	server operates
	55	at the port indicated in the
	56	.Ql tftp
	57	service description;
	58	see
	59	.Xr services 5 .
	60	The server is normally started by
	61	.Xr inetd 8 .
	62	.Pp
	63	The use of
	64	.Xr tftp 1
65	does not require an account or password on the remote system.
66	Due to the lack of authentication information,
67	.Nm tftpd
68	will allow only publicly readable files to be
69	accessed.
70	Files containing the string ``/\\|\fB.\\|.\fP\\|/'' are not allowed.
71	Files may be written only if they already exist and are publicly writable.
72	Note that this extends the concept of
73	.Dq public
74	to include
75	all users on all hosts that can be reached through the network;
76	this may not be appropriate on all systems, and its implications
77	should be considered before enabling tftp service.
78	The server should have the user ID with the lowest possible privilege.
79	.Pp
80	Access to files may be restricted by invoking
81	.Nm tftpd
82	with a list of directories by including up to 20 pathnames
83	as server program arguments in
84	.Pa /etc/inetd.conf .
85	In this case access is restricted to files whose
86	names are prefixed by the one of the given directories.
87	The given directories are also treated as a search path for
88	relative filename requests.
89	.Pp
90	The options are:
91	.Bl -tag -width Ds
92	.It Fl l
93	Logs all requests using
94	.Xr syslog 3 .
95	.It Fl n
96	Suppresses negative acknowledgement of requests for nonexistent
97	relative filenames.
98	.El
99	.Sh SEE ALSO
100	.Xr tftp 1 ,
101	.Xr inetd 8
102	.Sh HISTORY
103	The
104	.Nm
105	command appeared in
106	.Bx 4.2 .