[Author Prev][Author Next][Thread Prev][Thread Next][Author Index][Thread Index]
[tor-talk] [ZS] Re: End-to-end correlation for fun and profit
----- Forwarded message from Bryce Lynch <virtualadept@xxxxxxxxx> -----
From: Bryce Lynch <virtualadept@xxxxxxxxx>
Date: Tue, 21 Aug 2012 13:08:52 -0400
To: zs-p2p@xxxxxxxxxxxxxxxx
Cc: doctrinezero@xxxxxxxxxxxxxxxx
Subject: [ZS] Re: [tor-talk] End-to-end correlation for fun and profit
Reply-To: doctrinezero@xxxxxxxxxxxxxxxx
On Tue, Aug 21, 2012 at 3:39 AM, ZeroState.net <info@xxxxxxxxxxxxx> wrote:
> This sounds like a potentially powerful anti-Tor method, if I
> understand correctly. Basically it's an inference method that treats
> the Tor network as a black box, right?
>
> Do we think this is a serious problem?
I don't know.
There isn't a whole lot we can do if entire ISPs are tapped (the Syria
problem) aside from avoid their network infrastructure entirely.
...
After sprinting through the Tor source code, I came across this
official documentation pertaining to how Tor chooses next nodes in a
circuit:
https://gitweb.torproject.org/torspec.git/blob/HEAD:/path-spec.txt#l184
Quote:
"We do not choose more than one router in a given /16 subnet (unless
EnforceDistinctSubnets is 0)."
This configuration setting defaults to 1/True. Verified:
https://gitweb.torproject.org/tor.git/blob/49d150a9fad2cb8d3887af1e112b15365c11f4ba:/src/or/config.c#l2591
https://gitweb.torproject.org/tor.git/blob/49d150a9fad2cb8d3887af1e112b15365c11f4ba:/src/or/or.h#l2777
https://gitweb.torproject.org/tor.git/blob/49d150a9fad2cb8d3887af1e112b15365c11f4ba:/src/or/routerlist.c#l1350
https://gitweb.torproject.org/tor.git/blob/49d150a9fad2cb8d3887af1e112b15365c11f4ba:/src/or/routerlist.c#l1401
This claim sounds a little fishy to me, in this light.
--
The Doctor [412/724/301/703] [ZS]
https://drwho.virtadpt.net/
"I am everywhere."
--
--
Zero State mailing list:
http://groups.google.com/group/DoctrineZero
----- End forwarded message -----
--
Eugen* Leitl <a href="http://leitl.org";>leitl</a> http://leitl.org
______________________________________________________________
ICBM: 48.07100, 11.36820 http://www.ativel.com http://postbiota.org
8B29F6BE: 099D 78BA 2FD3 B014 B08A 7779 75B0 2443 8B29 F6BE
_______________________________________________
tor-talk mailing list
tor-talk@xxxxxxxxxxxxxxxxxxxx
https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-talk