rlprd - remote printing proxy daemon
rlprd [-nqV] [-pport] [-ttimeout] [--debug]
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.
Print gobs of debugging information.
Don’t run rlprd as a daemon. Usually not needed.
Select an alternate port (instead of 7290) to listen on.
Usually not needed.
-q, --quiet, --silent
Quiet mode - stay quiet (except for fatal errors).
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
Print version and exit.
rlpr(1), rlpq(1), rlprm(1), rlprrc(5)
It is not currently possible to run rlprd from inetd(8).