WRT54G Mirror Port

[sbuhlig at gmail.com (Sam Buhlig)]

To be honest, I dont know how you would do it on only 3 of them. Because if
your computer that is doing the sniffing has anything hooked up at all to
the transmit side.....collisons....broadcast from the sniffing
box.....attenuation (hope that is spelled right) issues....

I do it with 2 nics and bond them together  and the way they are connected
to the box that is sniffing; it wont allow them to transmit. They are only
connected to 2 and 6 on both nics. Which should only allow to receive.

If someone else has any thoughts....throw them on here because I would like
to know.



As far throughput issues....have not seen any. I kept the twists as tight as
possible. Keeping the loss to a minimum.


Thanks,
Sam


On Thu, Jan 14, 2010 at 11:01 AM, Robin Wood <dninja at gmail.com> wrote:

> 2010/1/14 Sam Buhlig <sbuhlig at gmail.com>:
> > Just another possible work around for you might be building a passive
> tap.
> > http://hackaday.com/2008/09/14/passive-networking-tap/
>
> This article builds a device with two ports for tapping each direction
> but then this instructables does a similar things with just a single
> tap port.
>
>
> http://www.instructables.com/id/Make_a_Passive_Network_Tap/step7/close-it-up/
>
> What would be the advantage of having the two ports over having just a
> single port?
>
> There is also discussion about untwisting the cables and debate over
> whether such short lengths of untwisted cable would make any
> difference to throughput, can anyone comment on this?
>
> Robin
>
> > or....
> >
> > cinci2600.com/wp-content/uploads/2009/01/passive-taps.odp
> >
> > (that is the one I followed)
> >
> > It is not as clean as being able to span a port, but a good way to do it
> on
> > the cheap.
> >
> > Hope this helps.
> >
> > Later,
> > Sam
> >
> > On Thu, Jan 14, 2010 at 8:16 AM, Paul Asadoorian <paul at pauldotcom.com>
> > wrote:
> > > From all the research that I did on the WRT54G (and similar hardware
> > > like the ASUS) this was not possible.  I believe that I read somewhere
> > > that it was possible on some of the hardware, but that the drivers did
> > > not support it.
> > >
> > > If you find that it does, let us know!
> > >
> > > Cheers,
> > > paul
> > >
> > > On 1/13/10 7:39 PM, Cody Dumont wrote:
> > > > Can you setup a mirror or SPAN-Port using a OpenWRT on the ASUS or
> > > > WRT54G?
> > > >
> > > > thanks all..
> > > >
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