man/cups-lpd.man

   1 .\"
   2 .\" "$Id: cups-lpd.man,v 1.5.2.4 2003/01/07 18:27:05 mike Exp $"
   3 .\"
   4 .\"   cups-lpd man page for the Common UNIX Printing System (CUPS).
   5 .\"
   6 .\"   Copyright 1997-2003 by Easy Software Products.
   7 .\"
   8 .\"   These coded instructions, statements, and computer programs are the
   9 .\"   property of Easy Software Products and are protected by Federal
  10 .\"   copyright law.  Distribution and use rights are outlined in the file
  11 .\"   "LICENSE.txt" which should have been included with this file.  If this
  12 .\"   file is missing or damaged please contact Easy Software Products
  13 .\"   at:
  14 .\"
  15 .\"       Attn: CUPS Licensing Information
  16 .\"       Easy Software Products
  17 .\"       44141 Airport View Drive, Suite 204
  18 .\"       Hollywood, Maryland 20636-3111 USA
  19 .\"
  20 .\"       Voice: (301) 373-9603
  21 .\"       EMail: cups-info@cups.org
  22 .\"         WWW: http://www.cups.org
  23 .\"
  24 .TH cups-lpd 8 "Common UNIX Printing System" "4 March 2002" "Easy Software Products"
  25 .SH NAME
  26 cups-lpd \- receive print jobs and report printer status to lpd clients
  27 .SH SYNOPSIS
  28 .B cups-lpd
  29 [ -o
  30 .I option=value
  31 ]
  32 .SH DESCRIPTION
  33 \fBcups-lpd\fR is the CUPS Line Printer Daemon ("LPD") mini-server that
  34 supports legacy client systems that use the LPD protocol.
  35 \fBcups-lpd\fR does not act as a standalone network daemon but instead
  36 operates using the Internet "super-server" \fBinetd(8)\fR. Add the
  37 following line to the \fBinetd.conf\fR file to enable the
  38 \fBcups-lpd\fR daemon:
  39 .br
  40 .nf
  41
  42     printer stream tcp nowait lp /usr/lib/cups/daemon/cups-lpd cups-lpd
  43 .fi
  44 .LP
  45 If you are using the newer \fIxinetd(8)\fR daemon, add the following
  46 lines to the \fBxinetd.conf\fR file:
  47 .br
  48 .nf
  49
  50     service printer
  51     {
  52         socket_type = stream
  53         protocol = tcp
  54         wait = no
  55         user = lp
  56         server = /usr/lib/cups/daemon/cups-lpd
  57     }
  58 .fi
  59 .SH SECURITY
  60 \fBcups-lpd\fR currently does not perform any access control
  61 based on the settings in \fIcupsd.conf(5)\fR or in the
  62 \fIhosts.allow(5)\fR or \fIhosts.deny\fR files used by TCP
  63 wrappers. Therefore, running \fBcups-lpd\fR on your server will
  64 allow any computer on your network (and perhaps the entire
  65 Internet) to print to your server.
  66 .LP
  67 While \fIxinetd\fR has built-in access control support, you
  68 should use the TCP wrappers package with \fIinetd\fR to limit
  69 access to only those computers that should be able to print
  70 through your server.
  71 .SH OPTIONS
  72 The \fI-o\fR option to \fBcups-lpd\fR inserts options for all print queues.
  73 Most often this is used to disable the "l" filter so that remote print jobs
  74 are filtered as needed for printing:
  75 .br
  76 .nf
  77
  78     printer stream tcp nowait lp /usr/lib/cups/daemon/cups-lpd cups-lpd \
  79         -o document-format=application/octet-stream
  80
  81     server = /usr/lib/cups/daemon/cups-lpd
  82     server_args = -o document-format=application/octet-stream
  83 .fi
  84 .LP
  85 The example shown resets the document format to be
  86 \fIapplication/octet-stream\fR, which forces auto-detection of the print
  87 file type.
  88 .SH COMPATIBILITY
  89 \fBcups-lpd\fR does not enforce the restricted source port
  90 number specified in RFC 1179, as using restricted ports does not
  91 prevent determined users from submitting print jobs. While this
  92 behavior is different than standard Berkeley LPD
  93 implementations, it should not affect normal client operations.
  94 .LP
  95 The output of the status requests follows RFC 2569, Mapping
  96 between LPD and IPP Protocols. Since many LPD implementations
  97 stray from this definition, remote status reporting to LPD
  98 clients may be unreliable.
  99 .SH SEE ALSO
 100 inetd(8), xinetd(8),
 101 CUPS Software Administrators Manual,
 102 http://localhost:631/documentation.html
 103 .SH COPYRIGHT
 104 Copyright 1993-2003 by Easy Software Products, All Rights Reserved.
 105 .\"
 106 .\" End of "$Id: cups-lpd.man,v 1.5.2.4 2003/01/07 18:27:05 mike Exp $".
 107 .\"