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cups-lpd(8)			      Easy Software Products			      cups-lpd(8)

       cups-lpd - receive print jobs and report printer status to lpd clients

       cups-lpd [ -o option=value ]

       cups-lpd  is  the CUPS Line Printer Daemon ("LPD") mini-server that supports legacy client
       systems that use the LPD protocol.  cups-lpd does not act as a standalone  network  daemon
       but instead operates using the Internet "super-server" inetd(8). Add the following line to
       the inetd.conf file to enable the cups-lpd daemon:

	   printer stream tcp nowait lp /usr/lib/cups/daemon/cups-lpd cups-lpd

       If you are using the newer xinetd(8) daemon, add the following lines  to  the  xinetd.conf

	   service printer
	       socket_type = stream
	       protocol = tcp
	       wait = no
	       user = lp
	       server = /usr/lib/cups/daemon/cups-lpd

       cups-lpd  currently  does  not  perform	any  access  control  based  on  the  settings in
       cupsd.conf(5) or in the hosts.allow(5) or hosts.deny files used by  TCP	wrappers.  There-
       fore, running cups-lpd on your server will allow any computer on your network (and perhaps
       the entire Internet) to print to your server.

       While xinetd has built-in access control support, you should use the TCP wrappers  package
       with  inetd  to	limit access to only those computers that should be able to print through
       your server.

       The -o option to cups-lpd inserts options for all print queues.	Most often this  is  used
       to disable the "l" filter so that remote print jobs are filtered as needed for printing:

	   printer stream tcp nowait lp /usr/lib/cups/daemon/cups-lpd cups-lpd	       -o document-format=application/octet-stream

	   server = /usr/lib/cups/daemon/cups-lpd
	   server_args = -o document-format=application/octet-stream

       The  example shown resets the document format to be application/octet-stream, which forces
       auto-detection of the print file type.

       cups-lpd does not enforce the restricted source port number  specified  in  RFC	1179,  as
       using restricted ports does not prevent determined users from submitting print jobs. While
       this behavior is different than standard  Berkeley  LPD	implementations,  it  should  not
       affect normal client operations.

       The output of the status requests follows RFC 2569, Mapping between LPD and IPP Protocols.
       Since many LPD implementations stray from this definition, remote status reporting to  LPD
       clients may be unreliable.

       inetd(8),  xinetd(8), CUPS Software Administrators Manual, http://localhost:631/documenta-

       Copyright 1993-2002 by Easy Software Products, All Rights Reserved.

4 March 2002			   Common UNIX Printing System			      cups-lpd(8)
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