Provided by: cups_2.1.3-4_i386 bug


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


       cups-lpd [ -h hostname[:port] ] [ -n ] [ -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
       any of the Internet "super-servers" such as inetd(8),  launchd(8),  and


       -h hostname[:port]
            Sets the CUPS server (and port) to use.

       -n   Disables  reverse  address  lookups; normally cups-lpd will try to
            discover the hostname of the client via a reverse DNS lookup.

       -o name=value
            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;  the  inetd(8)  example  below   sets   the
            "document-format"   option   to  "application/octet-stream"  which
            forces autodetection of the print file format.


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

       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.


       Errors are sent to the system log.




       cups-lpd performs well with small  numbers  of  clients  and  printers.
       However,  since  a new process is created for each connection and since
       each process must query the printing system before each job submission,
       it  does  not scale to larger configurations.  We highly recommend that
       large configurations use  the  native  IPP  support  provided  by  CUPS

       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(5)
       files used by TCP wrappers.  Therefore, 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(8) has built-in access control support, you should use the
       TCP wrappers package with  inetd(8)  to  limit  access  to  only  those
       computers that should be able to print through your server.

       cups-lpd  is  not  enabled  by  the standard CUPS distribution.  Please
       consult with your operating system vendor to determine  whether  it  is
       enabled by default on your system.


       If  you  are  using  inetd(8), add the following line to the inetd.conf
       file to enable the cups-lpd mini-server:

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

       Note: If you  are  using  Solaris  10  or  higher,  you  must  run  the
       inetdconv(1m) program to register the changes to the inetd.conf file.

       CUPS  includes  configuration  files  for  launchd(8),  systemd(8), and
       xinetd(8).  Simply enable the cups-lpd service using the  corresponding
       control program.


       cupsd(8),   inetd(8),   launchd(8),   xinetd(8),   CUPS   Online   Help
       (http://localhost:631/help), RFC 2569


       Copyright © 2007-2015 by Apple Inc.