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Mesh Networks

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Re: Mesh Networks

#81

Post by devx »

einhverfr wrote: post #72
jacquesm wrote: post #70

Earlier quoted context omitted.

That's orthogonal. Private networks can be made up from any technology, privacy is another axis.

My point is that if you are opposed to cables because they can be tapped, wireless poses more problems....

Yes, but P2P mesh networks that are built for security have an advantage. They're encrypted end to end, for every node, and there's no one to implement a backdoor for the government, like in the case of ISP's. The ISP's right now are giving the government access all the data, unencrypted.

It's going to be a lot harder to "tap" a secure mesh network that's encrypted at every node. I would look more into this one:

http://hyperboria.net/

Re: Mesh Networks

#82

Post by bifrost »

bradgessler wrote: post #58
rhodey wrote: post #28

Earlier quoted context omitted.

A group of us are already well on the way in Oakland, stop by some time! https://sudoroom.org/wiki/Mesh

Are there any plans to connect up to an SF mesh? I could see setting up some backbones across the bay, but I'm not sure what the technicalities are around this.

WiFi reflection across the bay and the fog is murder. It basically makes all but high-power links useless...

Re: Mesh Networks

#83

Post by Swannie »

fphhotchips wrote: post #5

This seems something like the Serval Project ( http://www.servalproject.org/ ). Difference being that Serval is for mobile telecommunications meshes, rather than fixed(-ish) data connections.

Serval is referenced in the article, just not by name.

Re: Mesh Networks

#84

Post by mathgenius »

shaddi wrote: post #65

It seems like there's been another surge of interest of late in mesh networks. Last time this happened, I wrote up a piece explaining why mesh networks are really a poor solution for circumventing censorship: http://sha.ddih.org/2011/11/26/why-wireless-mesh-networks-wo... . Since then, some of my colleagues and I at Berkeley wrote a more academic version of this blog post. The talk is available here: http://www.youtu…

I'm wondering if software defined radio has anything to contribute here. Ultra wideband could help to mask the radio signals. Software defined antenna's could help with the directionality problem. This stuff is expensive today, but maybe not in a few years..

I'm really surprised that P2P doesn't scale on a mesh and would like to understand this better. I do research on message passing algorithms and obviously trees (hierarchies) are great, meshes are not... I can see that the overhead of routing messages is going to grow (like n^2?) with the mesh size, but i'm surprised there is no way around this.

Re: Mesh Networks

#85

Post by junto »

Could someone build this into DD-WRT or Tomato and then build this on top of WIFI / WLAN? In a built-up conurbation, you have a high concentration of WIFI routers that have a short range but with such a large concentration, maybe it doesn't matter?

Re: Mesh Networks

#86

Post by knowaveragejoe »

616c wrote: post #37
frisco wrote: post #20

I saw an article about this a little while ago. If anywhere in the world could support a wide scale mesh network, it would have to be the Bay Area. It would be a really cool experiment to blanket a part of the Valley in mesh wifi: I imagine it would be very doable to raise $100K and send 1,500 mesh routers to people in Palo Alto or SOMA. Open Mesh has some really cool low-cost ($50 - $75) hardware that seems to just…

And yet another mesh network, from HacDC hackerspace in Washington. http://project-byzantium.org/

Small correction, Byzantium is a linux distro for several architectures with out-of-the-box mesh networking packages/drivers.

Re: Mesh Networks

#87

Post by knowaveragejoe »

shaddi wrote: post #65

It seems like there's been another surge of interest of late in mesh networks. Last time this happened, I wrote up a piece explaining why mesh networks are really a poor solution for circumventing censorship: http://sha.ddih.org/2011/11/26/why-wireless-mesh-networks-wo... . Since then, some of my colleagues and I at Berkeley wrote a more academic version of this blog post. The talk is available here: http://www.youtu…

Have you engaged with the FNF(http://thefnf.org) guys at all? They've got quite a thing going judging by their mailing list(s).

Also, what are your opinions on Guifi.net?

Re: Mesh Networks

#89

Post by bluedino »

ck2 wrote: post #63

If you wanted to start a mesh network in your town, is there advice on how to protect yourself from legal liability in case someone does something clearly illegal with it? Do mesh operators have the same "safe harbor" protections? What if the FBI shows up on your doorstep and says "give us access or go to prison" ?

What do you do if your ISP says 'shut it down'?

Re: Mesh Networks

#90

Post by imw »

shaddi wrote: post #65

It seems like there's been another surge of interest of late in mesh networks. Last time this happened, I wrote up a piece explaining why mesh networks are really a poor solution for circumventing censorship: http://sha.ddih.org/2011/11/26/why-wireless-mesh-networks-wo... . Since then, some of my colleagues and I at Berkeley wrote a more academic version of this blog post. The talk is available here: http://www.youtu…

And here is my response to Shaddi: http://thefnf.org/why-wireless-mesh-networks-will-save-from-...

imw Executive Director, The Free Network Foundation

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