Disabling Wireless Networks? 63
An Ominous Coward asks: "The University of Florida student chapter of ACM hosts a yearly programming competition for students throughout the state of Florida. It is based on the ACM International Collegiate Programming Contest, and for the past ten years has been very successful, currently drawing a crowd in the hundreds. However, this year was the first we had a problem with wireless networks. We doubt that cheating was the intention, as no one had SSID broadcasting turned off (as far as we know). Wireless networking gear is quite inexpensive now. And while we don't believe it affected the contest this year, we would like to take precautions for future contests. Is there any way to disable all wireless networking in an area about the size of a large lecture hall?"
Disable Wireless Network (Score:1)
Seriously, though, you may be able to setup a small microwave source(s) in the vicinity. Though it may not block all signals. It should effectively reduce the usefulness of anything within a reasonable area.
Re:Disable Wireless Network (Score:2)
Re:Disable Wireless Network (Score:2)
Re:Disable Wireless Network (Score:3, Informative)
We need a moderation "-1 Idiot".
(Or maybe this is a clever troll? Oh dear...
Anyways, if you RTFA, you would discover that they are talking about students potentially using WiFi to communicate amongst themselves (or persons unknown outside of the area).
They're already wired, they're trying to prevent the un-wired from having free reign.
Re:Disable Wireless Network (Score:3, Funny)
Re:Disable Wireless Network (Score:2)
Re:Disable Wireless Network (Score:5, Informative)
And the humans won't explode if you poke a few holes in them with a fork.
This may be impractical, but ... (Score:1)
Re:This may be impractical, but ... (Score:4, Insightful)
That would be a lot of overhead. Are you going to check the specs of every system to ensure that it doesn't have a centrino processor(If someone were to cheat they would have no qualms about switching/removing stickers). I don't know how many powerbook/iBooks they get, but are you preparted to lift up the keyboard to look for an airport card on each one? Plus they could always sneak in wireless cards.
It's much more practical to find a way to disable the networks instead of the cards.
Re:This may be impractical, but ... (Score:1, Informative)
Coatchecking
Also, there's an old saying
Re:This may be impractical, but ... (Score:5, Informative)
Basically, the contest was staged in a typical university computer lab, and all the machines were using some special image created just for the contest and installed that morning. A log was created of all activity from the rooms being used, and checked later (I think the admin did this via a router or firewall). Any activity other than the network connection required for the submission software got your team DQ'd.
Re:This may be impractical, but ... (Score:3, Insightful)
The advantage of people using their own machines is they have their own environment, their own prefrences, and all the settings which they would like to use. If you're an emacs lover, what would you do if a contest stuck you with vi, or vice versa? What of all the small-time IDEs and editors which are adored by their users (both of them!)?
Re:This may be impractical, but ... (Score:3, Informative)
The only real problem regarding editors was for emacs users, especially those used to their own config setup. But - those are the breaks of participating in such a contest
Re:FCC (Score:1)
Re:FCC (Score:1, Informative)
Re:FCC (Score:5, Informative)
It IS licensed spectrum! Or, more accurately, about half of it is. Amateur Radio is assigned a portion of that spectrum as a "licensed operator" and you cannot harmfully interfere with them.
In addition, you can't exceed the limitations given in FCC Part 15.
Re:FCC (Score:2)
All you can eat solution (Score:2, Funny)
Re:All you can eat solution (Score:4, Funny)
Can you even imagine the smell of a lecture hall full of hackers recently goreged on frozen burritos? Yuck.
In the can (Score:5, Funny)
"Code in a Can"
--Chris
Re:In the can (Score:3, Informative)
yes there is a solution... (Score:5, Interesting)
hopefully that is enough noise to kill most networks...
or just make it very clear: NO WIRELESS NETWORKS. Walk around with netstumbler and a directional antenna. After a few people get antennas pointed at them, the networks will stop.
-Grump
Re:yes there is a solution... (Score:1)
I think that is a good idea. You could log all traffic, and the location within you lecture hall with 3 modified linksys 'G' wifi routers. Record the information, and afterwords ban the offenders.
IMHO I am sure that if you though some people were cheating that you could demand their laptop/etc and get their wep key. You co
Re:yes there is a solution... (Score:1)
Another solution... (Score:1)
I do like the idea of just saying No wireless networks. Monitor, if you catch them - humiliate them, then ban them for a couple years.
Re:Another solution... (Score:2)
Make a video of the himulaiton available for download.
That should be enough to keep them from cheating.
-Grump
only one way to be sure... (Score:5, Interesting)
AirJack (Score:5, Interesting)
This was the basis for the AirJack tool.
If I recall (Score:4, Interesting)
Given that principle, would it be possible to create a box that intercepts and responds with junk to any 802.11 packet it encounters?
Not sure, but I've given it thought myself when giving a class where everyone is sitting there checking email (when you give a 3-day bootcamp on a subject everyone starts to drift -if- there is a distraction
You don't necessarily need to -block- 802.11 traffic if you can make the existing networks worthless by giving junk back to the 802.11 clients. Perhaps masquerading the MAC of any AP you find active would be enough?
Re:If I recall (Score:1)
One leads to another, then ten, then more,
And no one buys anything from the store!
So no one gets paid and they can't make more,
The posse breaks up and that closes the door!
DON'T COPY!! (DON'T COPY THAT FLOPPY)
Click Here [ninjaculture.com] before you mod me down. It is the FUNNIEST video ever. Email me if you want a copy of it; I can dcc it on irc or something to you.
Chris
Re:Linking (Score:1)
Low Priority (Score:5, Funny)
Re:Low Priority (Score:2, Funny)
Re:Low Priority (Score:1)
> area about the size of a movie theatre or concert hall. Perhaps something
> slightly less lethal than a shotgun.
The lethality of a shotgun depends on what kind of ammo you use. For example,
if you load your shotgun with rock salt, it's a lot less lethal than if you
use buck shot.
Disable Phones? Copper Mesh! (Score:2, Informative)
Actually, that isn't that hard, you just have to plan for it in the consruction. Before attaching drywall to the studs, put a layer of this mesh [twpinc.com] on the studs. That will block pretty much all RF based devices from reaching their towers.
Re:Disable Phones? Copper Mesh! (Score:2)
Re:Low Priority (Score:1)
Might be enough to stop people in theatres if you're lucky. Although we all know that shotguns would really be more effective...
-Ares
DoS attacks for 802.11 networks (Score:5, Interesting)
Speaking from experience (Score:5, Funny)
Idiot. *mutter*
Re:Speaking from experience (Score:2, Interesting)
You will have more luck just monitoring it. (Score:3, Interesting)
I'm not sure but... (Score:3, Funny)
TV kills the net (Score:1, Interesting)
Make a jammer (Score:1)
As far as I understand, this would block all 802.11x communication in the area.
Make sure it blocks cell phones too... (Score:1, Informative)
Bigass transmitter (Score:2, Insightful)
Or hire a bunch of evil nazi unabrow dykes to slap cheaters silly.
Simple (Score:2)
Just seal everyone inside of a Faraday cage at the start of each contest.
EMP's (Score:4, Funny)
*as well as all computers, electronic gadgets, and vehicles built before 1980's
The trouble is generating one. You can use either:
- Very large capacitors, or...
- A nuclear device **
**With a nuclear device, you will not only disable all wireless networks, electronics, and vehicles built before the 1980's, but all humans, buildings, and organic matter for a very wide radius. No FCC complaints, but alot of DoD complaints will result.
Re:EMP's (Score:1)
magnetron (Score:1)
Cheap Solution (Score:1)
Look in the latest issue of mobile pc magazine (Score:1)
Osho
Use a VPN (Score:1)