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Network Bridging Via Ethernet to USB printer?

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Has anyone heard of a network being breached via a USB to Ethernet link on a printer?


At my work we have a network dedicated to company PC's they have a T1 line connected back to main server linking all 5 computers at our location to the rest of the company. We as employees at the same location like to be able to use our personal laptops while at work. We installed a cable modem router with a bay networks switch to connect all Lap tops seperate from company network. The Company PCS have USB printers 1 with Ethernet and 1 with large printer plug. All Company PCS connect to printers via USB and share over network. We added the network printable printer to our personal network and attached a D-Link ethernet print balun to the other. Recently new company IT guy came out and said we had put main network at risk by connetcing to the printers with our network. There was a bridge insude the preinters allowing access back via USB to secure company network. Seems like Hogwash to me but wanted to see if anyone else had heard??

Edited by firemanmike, 24 August 2010 - 11:43 AM.

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Even if that was possible, someone would need to have physical access to the printer's USB port...and if thats the case then you have a much bigger problem.
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