Question

HP C4780 Access Restriction

Asked by: expertofeverything

Hello,

I have an HP Photosmart C4780 All-in-one printer. I have recently had problems with non-authorized people using the printer's built-in wifi to print pages of text. I was wondering if there was anyway I can restrict this. I live in an apartment complex within easy wireless reach of about 100 people, and do not have the budget for such drastic measures as building a Faraday cage around my apartment.

Thank you very much in advance,

Brett Richards

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Asked On
2009-09-20 at 22:09:11ID24747488
Tags

printer

,

wifi

,

hp

,

c4780

,

access

,

Wireless Print Servers

Topics

Wireless Networking

,

Printers by HP

,

Wireless Technologies

Participating Experts
3
Points
500
Comments
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Answers

 

by: sarangk_14Posted on 2009-09-20 at 22:58:58ID: 25380521

Hi The Page 8 of the Printer Manual, available from http://www.retrevo.com/d/ds/progress?doc=6f9f3a739b92cfce2ff238a2224835db gives instructions about setting up the WEP encryption for the printer. Although WEP is not considered secure any-more, it will at least stop the non-hackers from printing to your printer.

Hope this helps.

Warm regards,
Sarang

 

by: sarangk_14Posted on 2009-09-20 at 23:02:33ID: 25380529

Sorry, the URL provided earlier is a dud. try this one: http://www.retrevo.com/r/23500ci964/5/Install+the+software+for+a+network+connection

The Chapter 2 will be useful for your purpose.

Regards,
Sarang

 

by: expertofeverythingPosted on 2009-09-21 at 01:17:26ID: 25381018

Thanks! I'll try that in the morning...

Many thanks,

Brett Richards

 

by: ShootaPosted on 2009-09-21 at 02:54:02ID: 25381366

The only problem with Sarang's recommended solution is if you are currently running WPA or WPA-2 on your wireless network, (and I hope for your sake that you are) then you will have to significantly lower the security of your entire wireless network just to connect your printer to it.  I looked through the HP web site and unfortunately it doesn't appear that your printer supports WPA, though you may be able to find something if you contact them.  

Assuming you can't get it to support WPA, I would recommend you connect if via a wired network connection or, if it doesn't have a wired connection, connect it via USB and share it out.  

Do whatever you need to so that you don't have to put your entire wireless network on WEP security, because WEP can be cracked in less then a minute with tools that anyone can download off the Internet.  And then your entire network is vulnerable.  

 

by: hdhondtPosted on 2009-09-21 at 04:26:37ID: 25381786

Most TCP/IP printers allow you to restrict the IP addresses from which they will accept jobs. If the list is empty, all addresses can print. If the list has 1 or more addresses, only those can print.

Type the printer's IP address in your browser, and see if you can find that list. Then enter the allowed IP addresses.

 

by: expertofeverythingPosted on 2009-09-22 at 21:25:41ID: 25400012

Hello everyone,

I have looked into this problem, and as Shoota said, this will not work on my network, which is WPA-2 Enterprise encrypted. In addition, I am not the administrator of this network, so I do not have the ability (nor the desire, for that matter) to lower the encryption on the network.

@hdhondt: Unfortunately, the network is not set up with static IP addresses, so this will not help...

In that case, is there a way to set up an ad-hoc network among the few computers allowed, to adequately encrypt the network against attackers, and to connect (on Windows Vista and XP) to both this ad-hoc network and the main network that connects to the internet?

Oh, and by the way, the network administrator does not allow Internet Connection Sharing, and monitors for it, so any solutions using ICS will not work, unfortunately. :(

Thanks much,

Brett Richards

 

by: hdhondtPosted on 2009-09-22 at 21:36:09ID: 25400061

You could set up your DHCP server (a server PC or the router) to assign fixed IP addresses to each PC. That way, the PCs will use DHCP and will get IP addresses assigned on whatever network they are connected to, but on your network they will always be given the same address.

And, of course, printers should always have a fixed IP address.

 

by: expertofeverythingPosted on 2009-09-24 at 11:57:12ID: 25416546

Could you please explain how to set up a DHCP server in this manner?

Thanks,

Brett Richards

 

by: hdhondtPosted on 2009-09-27 at 04:12:05ID: 25433628

That depends entirely on what kind of DHCP server you use. If it is a router, you can set it up by typing the router's IP address into your browser. Then, click on a link to set up DHCP. Actual details depend on the router model.

To set up a PC server as a DHCP server, see for example:

http://support.microsoft.com/kb/323416

 

by: expertofeverythingPosted on 2009-10-04 at 16:18:30ID: 25491515

I do not own Windows Server 2003 (or any other version), and I do not have administrator privileges on the network, so I can not modify the settings on the router. Is there any other way to go about this? Or alternate solutions?

Thank you very much,

Brett Richards

 

by: sarangk_14Posted on 2009-10-04 at 17:52:45ID: 25491718

Hi,

In the manual I'd provided earlier, there is a section called "Wireless with a router (infrastructure network)" on page 6, Chapter 2.

It should allow you to setup WPA as well. The instructions for "Install the software for a network connection" are provided on page 9.

The printer can also be connected using USB cable and setting up Printer Sharing (if permitted) on one of the machines. (Page 10 of the document)

Warm regards,
Sarang

 

by: hdhondtPosted on 2009-10-05 at 02:29:45ID: 25493580

If you do not have priviliges to change anything on the network, I don't think there is a real way out for you. In that case you probably also won't be allowed to set up a local shared printer as sarangk_14 suggests. If you can, you can also set up the printer so it only allows access from your PC over the network, in the way I suggested (in comment #25381786). Then share your connection to those people who should have access to it

 

by: expertofeverythingPosted on 2009-10-24 at 16:29:50ID: 25654860

Thank you everyone for your help.

In the end, I was forced to simply shut off the wireless capabilities and use it as a normal wired printer.

Thank you for your time,

Brett

20120131-EE-VQP-002

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