differenciating APs from a computer

David Gibson david at gibson.dropbear.id.au
Thu Mar 13 11:32:46 EST 2003

On Wed, Mar 12, 2003 at 02:45:33PM -0600, Jerry Henderson wrote:
> The Aps and computer have unique MAC hardware addresses. Why don't you use
> them to distinguish the source of frames?

Because the APs are in bridging mode: the source addresses of the
packets coming through them will be the source addresses of the
original sending stations.

I don't think it is possible to differentiate between the APs based on
the packet contents alone: this is essentially the point of bridging.

> From: wireless-bounces+jhen=prodigy.net at lists.samba.org
> [mailto:wireless-bounces+jhen=prodigy.net at lists.samba.org]On Behalf Of Jesus
> Molina
> Sent: Wednesday, March 12, 2003 1:18 PM
> To: wireless at lists.samba.org
> Subject: differenciating APs from a computer
> Hello,
> I have a quetion, which could sound retarded, but I have a point:)
> i have three AP, in bridge mode connected to the same computer throught a
> hub. The computer has a dhcp server running. The clients get their IP
> adresses from
> this dhcp server.
> Now, the question is: can I tell apart packets coming from different AP?
> and if so, how?
> In other words, I want to be able to distinguish  packets from clients
> associate to one AP or another, using only one network card...
> I think I cant, unless the AP in bridge mode uses his
> own MAC address, stripping the MAC of the client, but I am unsure how
> bridge mode works...
> All the AP have different essids
> Any thoughts? Thanks!
> -Jesus

David Gibson			| For every complex problem there is a
david at gibson.dropbear.id.au	| solution which is simple, neat and
				| wrong.

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