andrew lewman andrew@torproject.org august 4, 2010 · andrew lewman andrew@torproject.org iccs tor...
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ICCS Tor Overview
Andrew Lewmanandrew@torproject.org
August 4, 2010
Andrew Lewman andrew@torproject.org () ICCS Tor Overview August 4, 2010 1 / 15
The Tor Project, Inc.
501(c)(3) non-profit organization dedicated to the research anddevelopment of technologies for online anonymity and privacy
Andrew Lewman andrew@torproject.org () ICCS Tor Overview August 4, 2010 2 / 15
What is Tor?
online anonymity software and network
open source, freely available (3-clause BSD license)
active research environment:Rice, UMN, NSF, NRL, Drexel, Waterloo, Cambridge UK, BambergGermany, Boston U, Harvard, MIT, RPI, GaTech
increasingly diverse toolset:Tor, Torbutton, Tor Browser Bundle, TorVM, Incognito LiveCD, TorWeather, Tor auto-responder, Secure Updater, Orbot, TorFox, Torora,Portable Tor, Tor Check, Arm, Nymble, Tor Control, Tor Wall
Andrew Lewman andrew@torproject.org () ICCS Tor Overview August 4, 2010 3 / 15
What is Tor?
online anonymity software and network
open source, freely available (3-clause BSD license)
active research environment:Rice, UMN, NSF, NRL, Drexel, Waterloo, Cambridge UK, BambergGermany, Boston U, Harvard, MIT, RPI, GaTech
increasingly diverse toolset:Tor, Torbutton, Tor Browser Bundle, TorVM, Incognito LiveCD, TorWeather, Tor auto-responder, Secure Updater, Orbot, TorFox, Torora,Portable Tor, Tor Check, Arm, Nymble, Tor Control, Tor Wall
Andrew Lewman andrew@torproject.org () ICCS Tor Overview August 4, 2010 3 / 15
What is Tor?
online anonymity software and network
open source, freely available (3-clause BSD license)
active research environment:Rice, UMN, NSF, NRL, Drexel, Waterloo, Cambridge UK, BambergGermany, Boston U, Harvard, MIT, RPI, GaTech
increasingly diverse toolset:Tor, Torbutton, Tor Browser Bundle, TorVM, Incognito LiveCD, TorWeather, Tor auto-responder, Secure Updater, Orbot, TorFox, Torora,Portable Tor, Tor Check, Arm, Nymble, Tor Control, Tor Wall
Andrew Lewman andrew@torproject.org () ICCS Tor Overview August 4, 2010 3 / 15
What is Tor?
online anonymity software and network
open source, freely available (3-clause BSD license)
active research environment:Rice, UMN, NSF, NRL, Drexel, Waterloo, Cambridge UK, BambergGermany, Boston U, Harvard, MIT, RPI, GaTech
increasingly diverse toolset:Tor, Torbutton, Tor Browser Bundle, TorVM, Incognito LiveCD, TorWeather, Tor auto-responder, Secure Updater, Orbot, TorFox, Torora,Portable Tor, Tor Check, Arm, Nymble, Tor Control, Tor Wall
Andrew Lewman andrew@torproject.org () ICCS Tor Overview August 4, 2010 3 / 15
estimated 500,000 daily users
]
Andrew Lewman andrew@torproject.org () ICCS Tor Overview August 4, 2010 4 / 15
Twitter in Iran: Good.
From http://www.time.com/time/world/article/0,8599,1905125,00.html
Andrew Lewman andrew@torproject.org () ICCS Tor Overview August 4, 2010 5 / 15
Twitter in USA: Bad.
from http://gothamist.com/2009/10/05/fbi raids queens home in g20 protes.php
Andrew Lewman andrew@torproject.org () ICCS Tor Overview August 4, 2010 6 / 15
Who uses Tor?
Normal people
LawEnforcement
Human RightsActivists
Business Execs
Militaries
Abuse Victims
Andrew Lewman andrew@torproject.org () ICCS Tor Overview August 4, 2010 7 / 15
Tor hides communication patterns by relaying data throughvolunteer servers
Tor Node
Tor Node
Tor Node
Tor Node
Tor NodeTor Node
Tor Node
Tor Node
Tor Network
Web server
Tor user
Encrypted tunnel
Unencrypted TCP
Tor Node
Tor Node
Tor Node
Exit node
Entry nodeMiddle node
Diagram: Robert Watson
Andrew Lewman andrew@torproject.org () ICCS Tor Overview August 4, 2010 8 / 15
Tor
Andrew Lewman andrew@torproject.org () ICCS Tor Overview August 4, 2010 9 / 15
Metrics
Measuring metrics anonymously
NSF grant to find out
Metrics portal:https://www.torproject.org/projects/metrics
Andrew Lewman andrew@torproject.org () ICCS Tor Overview August 4, 2010 10 / 15
Tor hidden services allow privacy enhanced hosting ofservices
Andrew Lewman andrew@torproject.org () ICCS Tor Overview August 4, 2010 11 / 15
Operating Systems leak info like a sieve
Applications, networkstacks, plugins, oh my....
some call this ”sharing”
Did you know MicrosoftWord and OpenOfficeWriter are browsers?
http:
//www.decloak.net/ isa fine test
Andrew Lewman andrew@torproject.org () ICCS Tor Overview August 4, 2010 12 / 15
Operating Systems leak info like a sieve
Applications, networkstacks, plugins, oh my....some call this ”sharing”
Did you know MicrosoftWord and OpenOfficeWriter are browsers?
http:
//www.decloak.net/ isa fine test
Andrew Lewman andrew@torproject.org () ICCS Tor Overview August 4, 2010 12 / 15
Operating Systems leak info like a sieve
Applications, networkstacks, plugins, oh my....some call this ”sharing”
Did you know MicrosoftWord and OpenOfficeWriter are browsers?
http:
//www.decloak.net/ isa fine test
Andrew Lewman andrew@torproject.org () ICCS Tor Overview August 4, 2010 12 / 15
Operating Systems leak info like a sieve
Applications, networkstacks, plugins, oh my....some call this ”sharing”
Did you know MicrosoftWord and OpenOfficeWriter are browsers?
http:
//www.decloak.net/ isa fine test
Andrew Lewman andrew@torproject.org () ICCS Tor Overview August 4, 2010 12 / 15
Mobile Operating Systems
Entirely new set of challenges for something designed to know whereyou are
Orbot: Tor on Android.http://openideals.com/2009/10/22/orbot-proxy/
iphone, maemo, symbian, etc
Tor on Windows CE, http://www.gsmk.de as an example.
Andrew Lewman andrew@torproject.org () ICCS Tor Overview August 4, 2010 13 / 15
Next steps
Visit https://www.torproject.org/ for more information, links, andideas.
Andrew Lewman andrew@torproject.org () ICCS Tor Overview August 4, 2010 14 / 15
Credits & Thanks
who uses tor?http://www.flickr.com/photos/mattw/2336507468/siz, MattWestervelt, CC-BY-SA.
danger!, http://flickr.com/photos/hmvh/58185411/sizes/o/,hmvh, CC-BY-SA.
500k, http://www.flickr.com/photos/lukaskracic/334850378/sizes/l/,Luka Skracic, used with permission.
Andrew Lewman andrew@torproject.org () ICCS Tor Overview August 4, 2010 15 / 15
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