tftpd(1M)
NAME
in.tftpd, tftpd - Internet Trivial File Transfer Protocol
server
SYNOPSIS
in.tftpd [-s] [homedir]
DESCRIPTION
tftpd is a server that supports the Internet Trivial File
Transfer Protocol (TFTP). This server is normally started by
inetd(1M) and operates at the port indicated in the tftp
Internet service description in the /etc/inetd.conf file. By
default, the entry for in.tftpd in etc/inetd.conf is com-
mented out. To make in.tftpd operational, the comment
character(s) must be deleted from the file. See
inetd.conf(4).
Before responding to a request, the server attempts to
change its current directory to homedir; the default direc-
tory is /tftpboot.
The use of tftp does not require an account or password on
the remote system. Due to the lack of authentication infor-
mation, in.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 con-
cept 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 this service.
in.tftpd runs with the user ID and group ID set to
[GU]ID_NOBODY under the assumption that no files exist with
that owner or group. However, nothing checks this assump-
tion or enforces this restriction.
OPTIONS
-d Debug. When specified it sets the SO_DEBUG socket
option.
-s Secure. When specified, the directory change to
homedir must succeed. The daemon also changes its root
directory to homedir.
FILES
/etc/inetd.conf
USAGE
The in.tftpd server is IPv6-enabled. See ip6(7P).
ATTRIBUTES
See attributes(5) for descriptions of the following attri-
butes:
____________________________________________________________
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
|_____________________________|_____________________________|
| Availability | SUNWtftp |
|_____________________________|_____________________________|
SEE ALSO
tftp(1), inetd(1M), inetd.conf(4), netconfig(4), attri-
butes(5), ip6(7P)
Malkin, G. and Harkin, A. RFC 2347, TFTP Option Extension.
The Internet Society. May 1998
Malkin, G. and Harkin, A. RFC 2348, TFTP Blocksize Option.
The Internet Society. May 1998
Malkin, G. and Harkin, A. RFC 2349, TFTP Timeout Interval
and Transfer Size Options. The Internet Society. May 1998
Sollins, K.R. RFC 1350, The TFTP Protocol (Revision 2).
Network Working Group. July 1992.
NOTES
The tftpd server only acknowledges the transfer size option
that is sent with a read request when the octet transfer
mode is specified.
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