Tftpd is a server which supports the
Internet Trivial File Transfer
Protocol (
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 implications
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 directories 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:
- -l
-
Logs all requests using
syslog(3).
- -n
-
Suppresses negative acknowledgement of requests for nonexistent
relative filenames.