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 From:  Alex Neuman van der Hans <alex at nkpanama dot com>
 Cc:  m0n0wall at lists dot m0n0 dot ch
 Subject:  Re: [m0n0wall] Configuracion wireless en monowall
 Date:  Mon, 22 May 2006 11:25:11 -0500
Alex Neuman van der Hans wrote:
> Sólo puedes impedir broadcasts entre redes, no entre nodos de una 
> misma red.
> Por ejemplo, puedes impedir que hagan broadcasts de a 
>, pero no de a (porque están dentro 
> de la misma red y del mismo alambre).
> De no saber el IP puedes usar el "angry ip scanner" (googlealo y lo 
> puedes bajar) para saber, entre otras cosas, el nombre del recurso 
> (igual no lo necesitas), la dirección IP, el mac address, el usuario 
> que usó para entrar, etc. 
For the benefit of the other 60% of the US (those who can't process 
spanish), this is basically a discussion about isolating specific users 
from the rest of the network, which can probably be done through VLANs 
(not that I have any idea how to do it). Somebody asked if blocking 
netbios broadcasts would work, and I replied that you can prevent 
broadcasts *across* networks, not *within* a network.

There *is* an option, if you want to isolate your wifi clients, to do 
such a thing. It's called "AP Isolation" or something, and it's 
available in most linksys wifi routers/AP's. Dunno if it's available in 
others, though.