How to disable port 9100 of HP LaserJet M1536dnf MFP

[tungphuoc21]

I can't see where to disable 9100 port in webservice, also can't telnet to it by command.

I have upgraded newest firmware "20140630".

Please show me how to disable port 9100 for HP LaserJet M1536dnf MFP.

[MKazi]

@tungphuoc21

Welcome to HP Support Forums. 🙂 I came across your post and understand that you have an HP LaserJet Pro M1536dnf Multifunction Printer and would like to know how to disable the 9100 port on your printer. I read that such option is not available in web services and by doing telnet. I appreciate the steps you have performed and have certainly done a good job.

By default, the 9100 port is not enabled in the printer. However, please try to disable port 9100 using the below steps:

• Open Devices and Printers.
• Right click on your printer and select "Printer Properties."
• The printer properties window will appear, 
• Click on the Ports tab on the printer properties window. 
• It will display a list of ports. Please check if the 9100 port is listed and if yes then uncheck it
• Click on Apply and OK.

You could also review this document for more information: http://hp.care/2gGrhos

Feel free to reach out for any further help. Cheers! 🙂

[tungphuoc21]

Thanks for your response, but sorry , it's not useful in this case.

My network team found port 9100 is active. As the picture below, "10.19.72.4" is IP Address of printer.

Therefore, anyway, can you please show me how to secure or disable this port?

[A4Apollo]

@tungphuoc21, thanks for the response.

Thanks for trying out the steps.

Try few steps recommended below.

telnet to the printer IP address
enter “/” to view settings
enter “?” for help
enter “9100-printing:0” to disable it
enter “quit” to save settings and exit

Hope this helps!

Have a wonderful day ahead! 🙂

[SHThompson]

As I recalled 9100 is the standard Port used by tcp/ip to print to a network printer so you might not actually want to disable that.

[tungphuoc21]

I can't telnet to the printer. May be printer not support telnet port 23, as the picture below.

I also cannot found where to enable telnet on the printer.