On Mon, Feb 25, 2013 at 6:08 AM, Martin T <[email protected]> wrote:
> According to /etc/config/wireless configuration file documentation,
> "option 'isolate' '1'" isolates wireless clients from each other in
> case device is working in WAP mode. In other words 802.11a/b/g/n
> clients are not able to reach each other in the same collision domain.
> For example if I set "option 'isolate' '1'" then I'm not able to ping
> or arping a host in the same 802.11g network. This setting does not
> change any firewall rules according to "iptables -L". In addition,
> there is no ebtables installed. How is this technically achieved? Is
> this part of 802.11 standards? I haven't found an article which
> explains this. I guess this isolation is done on physical
> layer(802.11a/b/g/n)?

I believe it has to do with the bridging component, and MAC forwarding
tables, not firewall rules. So data from a MAC is not forwarded to
other local MACs, only to the outside world. But a developer might be
able to give a more detailed explanation of exactly how it works.
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