[tor-bugs] #30477 [Core Tor/Tor]: Tor should self-test reachability of TCP listeners exposed by PT's

Mon Oct 21 03:05:38 UTC 2019

#30477: Tor should self-test reachability of TCP listeners exposed by PT's
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 Reporter:  ahf                                  |          Owner:  (none)
     Type:  task                                 |         Status:  new
 Priority:  Medium                               |      Milestone:  Tor:
                                                 |  unspecified
Component:  Core Tor/Tor                         |        Version:  Tor:
                                                 |  unspecified
 Severity:  Normal                               |     Resolution:
 Keywords:  tor-pt, network-team-roadmap-        |  Actual Points:
  november, s30-o23a3                            |
Parent ID:  #30471                               |         Points:
 Reviewer:                                       |        Sponsor:
                                                 |  Sponsor30-must
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Comment (by arma):

 Replying to [comment:16 teor]:
 > We haven't implemented bridge guards yet, so bridges also have another
 similar vulnerability: all the middle nodes chosen by bridge clients can
 learn that the previous hop is a bridge. (Client-Bridge-Middle has
 different timings and node selections than Client-Guard, OnionService-
 Guard and SingleOnionService-guard.)

 Good point. A bridge's current guard barely sees anything at all from it,
 other than fetching directory stuff.

 Almost makes me want to propose that bridges should build their path to
 Serge and then extend from there back to themselves. :)

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/30477#comment:17>
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