[tor-bugs] #26425 [Core Tor/Tor]: Add functionality to set SNI for client connections

Tor Bug Tracker & Wiki blackhole at torproject.org
Wed Jun 27 18:47:17 UTC 2018


#26425: Add functionality to set SNI for client connections
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 Reporter:  twim          |          Owner:  (none)
     Type:  enhancement   |         Status:  needs_information
 Priority:  Medium        |      Milestone:
Component:  Core Tor/Tor  |        Version:
 Severity:  Normal        |     Resolution:
 Keywords:                |  Actual Points:
Parent ID:                |         Points:
 Reviewer:  asn           |        Sponsor:
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Comment (by arma):

 What about a design where Tor has a pool of 20 SNIs, and chooses between
 them, as its default behavior?

 Or it flips a coin and either picks an SNI from the pool, or fabricates a
 fake one like the current behavior.

 Neither of those strategies will make Tor traffic blend in particularly
 well, but both of them would let a user behind twim's firewall use Tor
 out-of-the-box.

 (I guess they could both help with fingerprinting Tor in other ways
 though? Like, "find out if the domain they claim to be going to is
 associated with that other IP address". But, "that domain they claim to be
 going to doesn't even resolve" is a pretty strong indicator as it is.)

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/26425#comment:14>
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