[wplug] Tapping into an Ethernet connection

[Moshe Hyzon]

In general, there are no hubs anymore.  Hubs were standard in the 10BaseT
days, rare in the 100BaseT days and these days are completely incompatible
with the GigE spec.
Your best bet is to set up a Linux machine with 2 NICs and bridge them, then
use wireshark on the bridge interface.  Either that or get an (expensive)
managed switch that can do port mirroring.

Moshe


On Fri, May 15, 2009 at 10:04 AM, Weber, Lawrence A <
Lawrence.Weber at ansaldo-sts.us> wrote:

>  I have been trying to tap into an Ethernet connection between two pieces
> of equipment that we have designed.  I have found a cheap hub at only one
> Best Buy that allows me to use WireShark to view the messages.  However they
> are only 10Meg Hubs and eventually I am going to need to run at 100Meg.
>
> I have two other Linksys hubs (NH1005 and EFAH08W) that are listed as
> "Network Hub" and "Workgroup Hub".  Both of these older (5 yr?) devices seem
> to be switches and not hubs.  I looked on line and can only find used 4 port
> hubs, but I am concerned that they are also just switches.  Is there any way
> to know if a hub is a hub and not a switch?  Or, is there another way to use
> WireShark to view traffic?
>
>
> *Lawrence. A. Weber*
> Consulting Engineer
>
> *[image: image001]**
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