Re: Small hardware network sniffer - does it exist?

From: Matthew Leeds (mleeds@theleeds.net)
Date: Thu Nov 02 2006 - 13:57:59 EST


Try searching on Single Board Computer or Embedded System. You'll get stuff like this:

http://www.embeddedsys.com/subpages/products/sbc4685.shtml

It just takes a little filtering to find dual Ethernet devices. You could slap a small LCD display on this, even a touchscreen for basic interfacing.

----------
---Matthew
*********** REPLY SEPARATOR ***********

On 11/2/2006 at 1:32 PM Petr.Kazil@eap.nl wrote:

>I have ordered a few hardware keyloggers to play with
>(http://www.keelog.com/) and I was wondering if the same idea exists for
>networks?
>A device that you could tape under a desk, and that would act as a
>transparant bridge, sniffing all traffic.
>
>I know that you can use arp-spoofing to get a similar result (easier,
>better?), and I know about hardware network taps.
>But I'm still interested in the theoretical possibilities of this idea.
>
>I have a few old laptops, but these have just one PCMCIA network card, so
>bridging is not possible (well, with the right kind of network cards you
>can get two in that slot - I'll see if you can still buy them). But
>laptops are too big and heavy.
>
>I've looked at microcontrollers with ethernet adapters, but here I find
>webserver appliances with just one network interface. They're small but I'm
>not sure if you could run an OS and a sniffer on them. I've looked at
>miniboards but they are very expensive, too expensive for "just a toy".
>
>But, considering that you can get a 2-cigarette-pack sized Pix-firewall,
>such hardware must exist. But I haven't found the right keywords yet. Any
>ideas?
>
>Greetings, Petr Kazil
>
>
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