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 systemd(8).
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 are sent to the system log.
/etc/inetd.conf /etc/xinetd.d/cups-lpd /System/Library/LaunchDaemons/org.cups.cups-lpd.plist
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
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