If your firewall is not turned on when you configure your printer, you are putting your
print data at risk. If necessary, open the YaST Firewall module and turn it on before
setting up Listen mode (you can have two YaST modules open simultaneously). Pay attention
to how the Firewall has identified your Internal and External interfaces, because you
will need to know the External interface in the Printer setup.
Configuring CUPS and Network Printers with KDEPrint 131
7
When you have the firewall turned on, go back to the Printer setup and click Change next
to the line telling you Port for Listening to Remote CUPS Servers is Closed by Firewall.
Now check the Open Port in Firewall box; the Firewall Details button will become active.
Click the button; both interfaces will be checked, but won??™t be identified as Internal and
External. Uncheck the box matching the External interface. Click OK to confirm your
choice and return to the main Printer menu; then click Finish to complete the operation.
Printing with CUPS
After you have set up your printer, printing is an easy chore from the user??™s standpoint.
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