port 9100

[puritanlane]

My printer is connect to an Apple Airport router. It has begin printing for no apparent reason. The message, in part, is "stackoverflowin/sthack the hacker god has returned ...." I understand this has something to do with port 9100. How do I close this port for a print connect to an Airport router?

[Sizzlingsum_13]

Hello@puritanlane

Welcome to the HP Forums!!

I would like to take a moment and thank you for using this forum, it is a great place to find answers.Thank you for sharing the issue details. I will certainly do my best to help you.

I came across your message about the printing issue with your HP printer and wanted to pop in to help.

This issue can be fixed by updating your Mac and then resetting the printing system. Try the steps below:

* Click the Apple menu icon, and then click “System Preferences”.

* Click “Printers and Scanner” / “Print and Scan” or “Print and Fax”.

* Right-click the blank space in the Printers list, and then click “Reset printing system”.

* Click “Reset” in the confirmation window.

* Enter an administrator username and password, and then click “OK”.

* Wait until the printing system is reset and no devices show in the Printers list

* Click the “Add button” (+).

* Find, and then select the name of your printer from the printer list, and then click “Add” to add your printer.

* Click “Print Using...”, and then select the name of your printer (By default “Airprint” would be selected)

Please let me know if this resolves the issue, or if you require further assistance.

Cheers, have a nice day.

If this helps, please mark this as “Accepted Solution” as it will help several others with the same issue to get it resolved without hassles.To simply say thanks, please click the "Thumbs Up" button to give me a Kudos to appreciate my efforts to help.