[Commotion-dev] Quick Update

[Ben West]

Hi Aaron,

My apologies for the disparaging remark about production meshes.  Yes, I see
that the IS4CWN conference, this listserv (among others) means people are
actually using such networks for broadband access.

Also, yes, I did manage to get WPA-NONE working myself in IBSS mode under
OpenWRT + ath9k, although unfortunately not with 802.11n HT modes.  I
remember some confusion both on olsr-users listserv and OpenWRT forums about
whether WPA-NONE did actually work.
https://forum.openwrt.org/viewtopic.php?pid=133076#p133076

(Eating a heaping dish of crow right now ...)

On Wed, Apr 13, 2011 at 2:20 AM, L. Aaron Kaplan <aaron at lo-res.org> wrote:

>
> On Apr 13, 2011, at 3:00 AM, Outback Dingo wrote:
>
>
>
> On Tue, Apr 12, 2011 at 8:56 PM, Ben West <me at benwest.name> wrote:
>
>>
>>
>> On Thu, Apr 7, 2011 at 4:41 AM, Michael Rogers <m-- at gmx.com> wrote:
>>
>>>
>>> > Well, DOSing communication is generally pretty easy on Wi-Fi: just jam
>>> > it. Take a microwave oven, connect it to a strong reflector (Sat dish?)
>>> and
>>> > direct it at the mesh crowd ;-) Zap!
>>> > Very low tech. The obvious counter strategy is to simply be very close
>>> together.
>>> > Then the jammers signal is weaker than yours. A jammer always has to
>>> invest lots of
>>> > energy to jam a large area (signal strength_at_receiver =
>>> initial_strength * 1/distance^2)
>>>
>>> Wow, I hadn't even thought about attacks against the physical layer! But
>>> jamming a large mesh would require a lot of resources, as you say,
>>> whereas by attacking the routing protocol you could potentially disable
>>> the whole mesh from a single point.
>>>
>>>
>> Besides the microwave oven augmented with an aerial, XKCD also points out
>> this fundamental flaw in any security scheme requiring human memory:
>> http://xkcd.com/538/
>>
>> On a more serious note, I am curious if folks on the list have experience
>> using tinc for secure tunnels thru production meshes (= being used by folks
>> not on a OLSR/OpenWRT/Commotion/etc listserv ;).
>>
>
> Ben, as you know at least some of the people here actually have production
> meshes!
> Strange, I thought you were at the wireless summit and thus knew that
> actually our networks are production.
>
> Anyway, to answer your question: yes, tinc was used for some time in some
> of the Freifunk networks in Germany. I don't know if they still use it and
> if not why they stopped.
>
> a.
>
>


-- 
Ben West
me at benwest.name
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