With FON now selling their "social routers" for $5 a piece it seems like a good time to mention Hack-A-Day reader [Steve Anderson]'s previous FON hacking experience. By purchasing one of FON's subsidized routers you agree to participate in their network for at least one year. Steve had a look at the patched OpenWRT firmware FON uses and found the heartbeat system they use to monitor compliance. He then swapped out the firmware and spoofed the heartbeat with a cron job. This hack is an ethical trade off: remove FON's firmware and violate their terms of service or keep FON's firmware which probably violates your ISP's TOS. In related WRT54G news: you can now flash Linux onto v5 and v6 routers without hardware modification. So if you're at all worried, just buy one for the regular price off the shelf.
[thanks bird603568 and fucter]
Fun FON hacking
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Reader Comments
(Page 1)2. ahh okay I get it... I wouldn't call not participating a trade-off per say-- but I guess that works :P and I guess not all ISP's are a part of the internet 'access of evil' :P
Posted at 3:07PM on Sep 3rd 2006 by trebuchet03
3. I'm pretty sure that #12 means that you can choose not to play - buy a WRT54G from a store and don't share out your internet connection publicly if it's against your ISP's terms-of-service. It's not like a store bought WRT54G is going to set you back a whole lot of dough either, and you can hack it without fear of civil action.
4. #12 just curious.... how do you not violate your ISP's tos while not voilating fon's tos? I'm not trying to put you down or anything, I'm just curious if you thought of something...
Posted at 3:07PM on Sep 3rd 2006 by trebuchet03
5. trebuchet03, I know Speakeasy is one ISP that specifically allows you to share or resell your service.
Posted at 3:07PM on Sep 3rd 2006 by Eliot Phillips
6. but dont forget that the v4-6 have crippled amounts of flash and ram. I'm not sure about the clock speed thou
Posted at 3:07PM on Sep 3rd 2006 by bird603568
8. Is this possible? using your wrt54g wireless router as an antenna to pick up hot spots in an apt. complex. perhaps bridge router with hot spot in the area? how is this possible, i have onboard wireless antenna, and have 3 hotspots in my area but signal is "low". can i use my router to pick up better signal?
Posted at 3:07PM on Sep 3rd 2006 by Davidoff channel
10. Wow, with this discussion I'm glad I posted "just buy one for the regular price off the shelf". When cheap routers from FON came up the first time the possibility of Linux running on future WRTs looked very bleak and FON was one of the few ways you could guarantee running it. Things have changed since then. Now v5 and v6 (I didn't know those exsisted) can be flashed without issue. I think most people reading this will see it for what it is: If you want to support FON, buy their router and if you want to play with Linux, buy your own router. I may post controversial stuff from time to time, but it is with the firm belief that the hacking community at large is good at heart.
Posted at 3:07PM on Sep 3rd 2006 by Eliot Phillips
11. I also want to mention that someone(I forget who) determined that the mac address that fon sends via the heartbeat function is the wlan interface's mac, not the one printed on the bottom of the router (wlan mac should be 2 digits higher e.g. 'a2' where the mac addy on the router ends with 'a0'). And also, someone reported that the fon router ssh's into fon.com once and a while, even if no one is connecting to the hotspot, and the auto-firmware upgrade is turned off, no one knows why yet.
Posted at 3:07PM on Sep 3rd 2006 by fucter
12. looks like dom beat me to it also but didnt confirm it when i hinted towards it. i just didnt want to get shed more pissed than he already is check out oddree magizine today at http://www.oddree.com
Posted at 3:07PM on Sep 3rd 2006 by bird603568
13. That's not fair tp fon. Come on you should'nt even post this. Its borderline unethical just to put it out there. Keep doing this and no company is going to trust us to engage in these interesting type offers with the poorest of us users.
Posted at 3:07PM on Sep 3rd 2006 by steve hendrix
14. Ah. You beat me to the google cache by like 2 minutes.
Posted at 3:07PM on Sep 3rd 2006 by David
15. Very interesting piece of info, but one that helps nobody. Nor FON, nor ISPs, nor us, nor anyone I can think of. It is just like a recipt for a well-done atomic bomb made of sugar, water and salt, it would help no one. My respects for the "irregular shed" but my hacker ethics tell me that I'd not post anything that can bring no advance (but trouble) to the comunity. Greetz from Brazil!
Posted at 3:07PM on Sep 3rd 2006 by Alexandre, o tabajara
16. if you use google in a certian way you can still see the page thats all im gonna say. sorry irregular shed didnt know you didnt want it to be posted.
Posted at 3:07PM on Sep 3rd 2006 by bird603568
18. The FON hacking article has been pulled. Too much publicity about it is too likely to draw attention from FON, and it's not worth it. I recommend, if you want to throw out the FON T&Cs, that you get the source from FON's website and spend a little time figuring out what's going on. Me, I've got a family to think about.
Posted at 3:07PM on Sep 3rd 2006 by IrreGular shed
19. well crap. I had been visiting the website off and on for the past few weeks. It really was the only site that had infomation on the router. Tell me irregular shed, did you finally get a cron job to work?
Posted at 3:07PM on Sep 3rd 2006 by chris
20. Google Cache: http://66.102.7.104/search?q=cache:_oiZ5RJ9WpMJ:www.twindx.com/node/106+fon+site:twindx.com&hl=en&gl=us&ct=clnk&cd=1
Posted at 3:07PM on Sep 3rd 2006 by dom
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1. in many cases isps don't care who you *share* it with as long as you're not reselling. Therefore, the only appropriate option is the free wifi sharing, not reselling.
Posted at 3:07PM on Sep 3rd 2006 by deltaf