Slashdot Mirror


MIT Roofnet

prostoalex writes "MIT Technology Review runs a story about MIT Computer science students building their own mesh network for Internet access: 'A few weeks ago, MIT graduate student Shan Sinha canceled his broadband Internet service. Now his Net connection comes through the chimney. From a computer in the living room of his Cambridge, MA, apartment, a few blocks from the MIT campus, a cable goes into the fireplace up to the roof, where it is attached to an antenna. From there, data packets hop to another roof-mounted antenna at a nearby student's apartment. That way, from roof to roof in multiple hops, Sinha's data packets finally reach a gateway--a computer connected to the fixed Internet--at MIT's computer science building.'"

21 of 233 comments (clear)

  1. More links, and a serious offer by Saint+Aardvark · · Score: 4, Informative
    More information can be found at the MIT Roofnet homepage, and The Grid Ad Hoc Networking Project homepage. Directions on how to get the software can be found here; looks like the software is being released under the MIT license (like the BSD license, but :%s/BSD/MIT/g).

    Sadly, Vancouver, BC does not show up on their connectivity map. Anyone wanna trade karma for an MIT scholarship?

    1. Re:More links, and a serious offer by grub · · Score: 5, Informative


      Sadly, Vancouver, BC does not show up on their connectivity map.

      If you're at a university in Canada then you are likely running through CA*net4 anyhow. Think of "Internet2" in the US but fully optical with OC-192 speeds (10 Gb/sec) across most of Canada. (NB: We connect to it through work at Canada's National Research Council

      --
      Trolling is a art,
  2. Scalability? by mark_space2001 · · Score: 4, Interesting
    This is great for dense concentrations of geeks in places like a college campus. But what kind of applicability does this have elsewhere?

    Is anyone expecting regular people to put up antennas before there's access? Who goes first? Even if many do, unless there's a critical number in a given area they'll be useless. There's not enough early adopters out there to make this work. And where are most people going to get a static access point in less than 300 hops?

    It's cool, but I don't see what else can be done with it than make it a college toy.

    1. Re:Scalability? by quandrum · · Score: 4, Insightful

      Hmm... where have I heard this before?

      Oh yeah, the internet

  3. Sounds cool by Timesprout · · Score: 5, Funny

    But I am concerned as to the Santa friendliness of this chimney internet access. Will I still be able to get my presents if I access the internet this way.

    --
    Do not try to read the dupe, thats impossible. Instead, only try to realize the truth
    What truth?
    There is no dupe
  4. So now you can DOS this network ... by tessaiga · · Score: 5, Funny

    just by tossing a handful of bread crumbs at the MIT gateway's roof antenna?

    --
    The bold print giveth, and the fine print taketh away ...
    1. Re:So now you can DOS this network ... by Exiler · · Score: 5, Funny

      Or Rasberry jam.

      --
      Banaaaana!
  5. So if you run kazaa through something like this by HanzoSan · · Score: 5, Interesting



    How could the RIAA figure out who is who, and from what computer?

    --
    If you use Linux, please help development of Autopac
  6. Nobody wrote a story about me... by MikeCapone · · Score: 5, Funny

    ...and yet I get internet access through an antenna directed at a local school, which in turn hops back to my father's office.

    I guess I'm just not cool enough...

  7. The beginning of a true Mesh network? by quandrum · · Score: 4, Interesting

    Could this be the start of a true nationwide mesh network?

    I could imagine this spreading out farther and farther across Boston. The other colleges could add in some of their fat pipes. And with the way the east coast has become some kind of giant megalopolis, it could spread down into Providence, Hartford, New York, Philly, Baltimore, DC.

    It'd be interesting to see how far we can grow a wireless grid network. What kind of latency would this kind of network have? Probably too high for gaming..

  8. How about this Idea. by HanzoSan · · Score: 4, Interesting



    Could a wireless mesh network such as this, then allow voice communication?

    Say I wanted to call someone across town via a wifi phone, could I connect to the wifi network and have unlimited free phonecalls? I think that would be even more useful than the internet.

    --
    If you use Linux, please help development of Autopac
  9. Could be used on cellphones, too. by immel · · Score: 5, Interesting

    A similar system could be used to extend the range of cellphone services. You wouldn't have to be near an actual tower, just near a wireless node that is near a tower. In fact, cellphones themselves could possibly be used as nodes in a computer system, communicating to the computers via bluetooth or a similar wireless standard.

    --

    10 Bits= $.25
    100 Bits= $.50
    110 Bits= $.75
    1000 Bits= 1 byte
  10. It's the right way... by SharpFang · · Score: 4, Interesting

    I think the future of the net is like this: when every wireless device is a router - so you're almost never out of range, no matter where you are - simply the signal is sent to the nearest neighbour and then relayed to the next etc, till it reaches some fixed broadband access point, and then again "hops" over several people's cellphones, webpads, home PCs, car computers etc, till it reaches its destination.

    It's the future... but it's a far future :)

    --
    45 5F E1 04 22 CA 29 C4 93 3F 95 05 2B 79 2A B2
  11. Internet, power, water... it is all good by Goyuix · · Score: 5, Interesting

    Reminds me of a story from about 9 months back or so. A local University noticed strange power usage from one of their lines, and after tracing it down for awhile noticed that a house next to campus had somehow hooked up to the university power grid.... basically "free" power for the last twenty years or so. The beauty of it was that they denied knowing about as the house had changed owners and attributed not seeing a power bill to some strange reason... And along those same lines, my wife's grandparents live right next to a gold course and one of their neighbors got busted a few years back for tapping into their water lines and using them for their lawn. Can you really blame them on this one? one lawn is a drop in the bucket compared to a full golf course.... Internet, power, water... it is all good

  12. Fire in the hole... by EdMack · · Score: 5, Funny

    So waht happens when the parents light a nice warm fire? Hehe, it's fiewire then.

    --
    puts ("Python r0cks\n");
  13. Weather forecast: Thunderstorms by Breeze99 · · Score: 5, Funny

    The weather forecast for the area [ http://ma.weather-forecast.ws/cambridge ] predicts thunderstorms. I guess wireing the chimneys will make this project serve as a physics lesson as well as a Internet connection.
    Zap!

  14. Random Trivia Note by portnoy · · Score: 5, Interesting

    Just in case anyone's wondering, yes, the professor Robert Morris mentioned in the article is in fact the same Robert Morris who wrote the 1988 Internet Worm.

  15. Cute, but is it secure? by GrnArmadillo · · Score: 5, Insightful

    The only thing I'd worry about here is whether or not you'd be opening yourself up to man in the middle attacks. I mean, WEP isn't THAT secure, and if you could get yourself between the last antenna and the computer center, you could conceivably get your hands on a lot of data....

  16. I've used the system, and it works great by fname · · Score: 4, Informative

    My friend is a post-doc at MIT, and he installed Roofnet. Previously, he had been using a Wi-Fi connection that a neighbor was "sharing." The problem was that the signal was not very strong. Now, it's great! I used it to stream my iTunes collection from my PowerMac G4 in California, all the way to MIT, across Roofnet (via probably 3-4 jumps), to the roofnet router, which was connected to his G4 laptop; the laptop was set up as a wireless access point, and everything worked fine! The limiting factor was actually the upload speed of my DSL.

    Anyways, it's a real-world technology that really works. It's still in it's infancy, and I'm sure it will move forward in fits (crackers & bandwidth hogs) and bursts (multiple, independent gateways to the internet). If this becomes easy to use & seamless, this could be technology that finally brings broadband to the masses, cheaply.

  17. local content by entartete · · Score: 4, Interesting

    while it's a neat way to provide access to the internet, the most interesting part of it to me would be how you could use a network such as this to provide access to servers/services running on the local mesh. community broadcasting using streaming servers or local interest web pages and the like.

  18. Sharing is caring by serutan · · Score: 4, Interesting

    The last paragraph raises the business issue that will inevitably try to stand in the way of this technology. "Most Internet service providers don't want their users sharing their bandwidth." No more than RIAA companies want you to hear any sound you haven't paid them for. The business mentality of getting everybody to buy their own everything is deeply entrenched in our economy. There is little incentive for business people to interest the public in sharing anything.

    There used to be a TV commercial showing a guy effortlessly breezing through all his home painting chores with his new Wagner Power Painter. As he puts the thing away in his garage he yells at his forlorn, brush-wielding neighbor, "Get a Wagner!" I remember thinking, "You asshole. Let the poor guy borrow your freakin' spray painter." But that kind of behavior would be bad for business. A large chunk of our economy is based on unused Power Painters hanging on their hooks in the garage.

    For community networks to catch on, someone is going to have to do some seed projects like Roofnet, that not only work technically in the real world but work business-ly in the REAL real world. I mean the world where somebody is formally, legally responsible for maintaining the Big Pipe between your local net and the Internet. The world of people who yell for lawyers because their service goes down, or is slow, or their specific oddball problem doesn't get fixed Right Now! The world of insurance issues, fee collection issues, disconnection and banning issues, tax issues, responsibilities, liabilities and so forth. In other words, it has to work in the steaming shitpile that the world outside of college often turns out to be.