wi - filtering traffic between stations on the same AP
matt at peterson.org
Mon May 19 22:42:34 PDT 2003
Might wanna try IPFW2 MAC address filtering, might work.
--On Saturday, May 17, 2003 2:40 PM +0200 Vaclav Petricek
<vaclav.petricek at mff.cuni.cz> wrote:
> I would like to be able to filter traffic between stations connected to
> a single AP. The AP should be used just for Internet access and not for
> communication between local stations.
> 1. I do not want the stations to use the AP as a retranslation point where
> they do not see each other directly
> 2. I want to limit the traffic generated by windows broadcasts etc.
> I have seen in the wi driver that when the packet is destined for an
> associated station, or it is a broad/multi/cast it gets retransmitted
> My questions are:
> 1. Is there a way to force these packets to go through ipfw without
> patching kernel? I have seen some sysctls that should control the ethernet
> level filtering but I had no luck making it work on a single wi interface.
> A pointer describing the data flow between interface kernel modules,
> kernel and firewall modules would be great.
> 2. In case I do have to make a patch to implement this filtering, what is
> the best way to encapsulate it? Some flag to ifconfig that says drop
> broadcasts and do not resend packets to associated stations?
> Thanks for any hints,
> Vaclav Petricek
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Matt Peterson another.geek.without.a.life
matt at peterson.org http://matt.peterson.org/
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