# cups-lpd

## NAME



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


## SYNOPSIS



           **cups-lpd**[ **-h** _hostname_[**:**_port_] ] [ **-n**] [ **-o** _option=value_ ]
    


## DESCRIPTION



           **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 **systemd**(8).
    


## OPTIONS



           **-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.
    


## CONFORMING TO



           **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 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.
    


## ERRORS



           Errors are sent to the system log.
    


## FILES



           _/etc/inetd.conf_
           _/etc/xinetd.d/cups-lpd_
           _/System/Library/LaunchDaemons/org.cups.cups-lpd.plist_
    


## NOTES



           The **cups-lpd** program is deprecated and will no longer be supported
           in a future feature release of CUPS.
    
       **PERFORMANCE**
           **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 instead.
    
       **SECURITY**
           **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.
    


## EXAMPLE



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


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