[Commotion-dev] Quick Update

[L. Aaron Kaplan]

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.

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