The Printer Configuration Tool's ability to share
configuration options can only be used if you are using the CUPS printing
Allowing users on a different computer on the network to print to a printer
configured for your system is called sharing the
printer. By default, printers configured with the
Printer Configuration Tool are not shared.
To share a configured printer, start the
Printer Configuration Tool and select a printer from the
list. Then select =>
from the pulldown menu.
If a printer is not selected,
=> only shows
the system-wide sharing options normally shown under the
On the Queue tab, select the option to make the queue
available to other users.
Figure 34-17. Queue Options
After selecting to share the queue, by default, all
hosts are allowed to print to the shared printer. Allowing all systems on
the network to print to the queue can be dangerous, especially if the system
is directly connected to the Internet. It is recommended that this option be
changed by selecting the All hosts entry and clicking
the Edit button to display the window shown in Figure 34-18.
If you have a firewall configured on the print server, it must be able to
send and receive connections on the incoming UDP port, 631. If you have a
firewall configured on the client (the computer sending the print request),
it must be allowed to send and accept connections on port 631.
Figure 34-18. Allowed Hosts
The General tab configures settings for all printers,
including those not viewable with the Printer Configuration Tool.
There are two options:
Automatically find remote shared queues —
Selected by default, this option enables IPP browsing.
When other machines on the network broadcast the queues that they have,
the queues are automatically added to the list of printers available to
the system; no additional configuration is required for a printer found
from IPP browsing. This option does not automatically share the printers
configured on the local system.
Enable LPD protocol — This option allows
the printer to receive print jobs from clients configured to use the LPD
protocol using the cups-lpd service, which is an
If this option is enabled, all print jobs are accepted from all hosts
if they are received from an LPD client.
Figure 34-19. System-wide Sharing Options