Konica Minolta C287i prints random text

[Mtrasa]

Hello everybody!

In our company we have a problem with random printing. It prints by itself and over night too.

SKM_C257i21020315020.pdf

[Phil B.]

Hello everybody!

In our company we have a problem with random printing. It prints by itself and over night too.

SKM_C257i21020315020.pdf

ASCII code.. you have a corrupt print driver or the WRONG print driver installed

what driver are you using?

are you a trained tech?

[emujo2]

Phil is 100% correct here..you are sending true PS data to a PCL print driver..I have seen jobs like this run until the finisher get's to it's low limit..My guess is you used to send these jobs to HP devices with no problems..You need the download and install KM's PS driver (this is PS emulation, but works pretty well). E

[emujo2]

BTW the last 2 posts have been regarding machines that don;t seem to be available in the US (no results for C278i or 367)..Am I missing something? E

[Bix]

Hello everybody!

In our company we have a problem with random printing. It prints by itself and over night too.

SKM_C257i21020315020.pdf

Your printer has a public IP. Someone, from anywhere in the world, is printing to your printer.


Check the firewall or enable ip filtering on the printer.

[Phil B.]

Your printer has a public IP. Someone, from anywhere in the world, is printing to your printer.


Check the firewall or enable ip filtering on the printer.

then they are using the wrong print driver..

frankly I don't see this being the case... i still go with the WRONG print driver.

[B0265]

Your printer has a public IP. Someone, from anywhere in the world, is printing to your printer.


Check the firewall or enable ip filtering on the printer.

Or someone is trying to attack a router and use the printers ip-address:
CVE-2018-14847 and Router Compromises (penetrate.io)

[Bix]

then they are using the wrong print driver..

frankly I don't see this being the case... i still go with the WRONG print driver.

Strangers on the web don't know the printer driver, so they send files with the wrong driver. For a long time, I had a public IP for my office printer because I was waiting for the firewall. Every morning I found papers similar to those.
Use the Shodan.io website. You will discover a lot of printers with a public ip and default administrator password.

[emujo2]

Do you know how hard it is to accidently put a printer into the DMZ and allow public access? This is not very likely, but I did see a local university that got hacked via port 25 and print jobs emptied every machine over the weekend..But the print jobs did not look like this..Those wingdings really point to a driver issue. E

[Bix]

The problem is that many small businesses don't even know what a DMZ is. In germany we still have companies that prefer fax instead of email..
So this doesn't surprise me. The doubt about the public IP arose immediately because the user says that the printer prints even at night, when there is no one in the office.