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Hacking Dell Network Printers


joker
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I read about the HP network printer hacks, but I have come across many Dell network printers and I want to test out how vulnerable they are.

To start things off, I performed a port scan:

Not shown: 971 closed ports

PORT STATE SERVICE

21/tcp open ftp

79/tcp open finger

80/tcp open http

161/tcp filtered snmp

179/tcp filtered bgp

515/tcp open printer

631/tcp open ipp

1022/tcp filtered unknown

1035/tcp filtered multidropper

1057/tcp filtered unknown

1126/tcp filtered unknown

1213/tcp filtered unknown

1233/tcp filtered unknown

1862/tcp filtered unknown

3878/tcp filtered unknown

5000/tcp open upnp

5001/tcp open commplex-link

5004/tcp filtered unknown

5566/tcp filtered unknown

8000/tcp open http-alt

8099/tcp filtered unknown

9000/tcp open cslistener

9100/tcp open jetdirect

9200/tcp open wap-wsp

9500/tcp open unknown

9595/tcp filtered pds

10000/tcp open snet-sensor-mgmt

27356/tcp filtered unknown

49161/tcp filtered unknown

I have to figure out how to change the lcd display.

I wonder if there are PJL commands

Any Ideas?

Edited by joker
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According to this text, this Dell printer supports post script drivers, which supports PJL

http://en.community.dell.com/support-forums/peripherals/f/3528/t/16934383.aspx

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According to this text, this Dell printer supports post script drivers, which supports PJL

http://en.community.dell.com/support-forums/peripherals/f/3528/t/16934383.aspx

i found a dell manual which shows a few pjl commands:

http://search.dell.com/results.aspx?s=gen&c=us&l=en&cs=&k=pjl+commands&cat=sup&x=0&y=0

PJL manual:

http://h20000.www2.hp.com/bc/docs/support/SupportManual/bpl13208/bpl13208.pdf

Edited by joker
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  • 3 weeks later...

all network printers that have port 9100 will support PJL

to change display the command is:

@PJL RDYMSG DISPLAY = "message" [<CR>]<LF>

if that does not work then try

@PJL JOB DISPLAY = "message" [<CR>]<LF>

this command will change display and make the printer go offline

@PJL OPMSG DISPLAY = "message" [<CR>]<LF>

to use just telnet to the port

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