NAME¶
rlprd - remote printing proxy daemon
SYNOPSIS¶
rlprd [
-nqV] [
-pport] [
-ttimeout] [
--debug]
DESCRIPTION¶
rlprd is a proxy which runs between the remote printing commands (
rlpr(1),
rlpq(1), and
rlprm(1)) and standard
lpd
print servers in situations where the remote printing commands cannot be
installed setuid root. For a discussion on how to configure the remote
printing commands, please see
rlpr(1).
rlprd needs to be installed setuid root - if it cannot be run this way,
it is
useless.
rlprd works by mapping non-privileged port requests from
rlpr(1)
clients to privileged ports so that
lpd's will listen to them.
Eliminating the "security" gained by having privileged ports is a
non-issue, since the Internet is no longer just Unix, and Unix is the only OS
that has the privileged port concept.
rlprd is
not a replacement for
lpd(8). It merely passes
data to a
lpd(8) on a target machine (which is specified by an
invocation of a remote printing command). However, when a client is using the
rlpr suite of tools to do remote printing, the client does not need to
run an
lpd(8) locally.
Note that once an
rlprd is set up on a network (including the Internet),
any host may connect to it and use its proxy services if it knows the name of
the machine running it.
OPTIONS¶
- --debug
- Print gobs of debugging information.
- -n, --no-daemon
- Don't run rlprd as a daemon. Usually not needed.
- -p, --port=number
- Select an alternate port (instead of 7290) to listen on.
Usually not needed.
- -q, --quiet, --silent
- Quiet mode - stay quiet (except for fatal errors).
- -t --timeout=seconds
- Set the inactivity timer. If the connection hangs for more
than seconds seconds, then rlprd will time out the
connection. Use the special value `-1' to wait forever. Default timeout is
3 seconds.
- -V, --version
- Print version and exit.
SEE ALSO¶
rlpr(1),
rlpq(1),
rlprm(1),
rlprrc(5)
AUTHOR¶
meem <meem@gnu.org>
BUGS/LIMITATIONS¶
It is not currently possible to run
rlprd from
inetd(8).
