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Re: [tor-bugs] #33666 [Circumvention/Snowflake]: Investigate Snowflake proxy failures



#33666: Investigate Snowflake proxy failures
-------------------------------------+------------------------
 Reporter:  cohosh                   |          Owner:  (none)
     Type:  defect                   |         Status:  new
 Priority:  High                     |      Milestone:
Component:  Circumvention/Snowflake  |        Version:
 Severity:  Normal                   |     Resolution:
 Keywords:                           |  Actual Points:
Parent ID:  #19001                   |         Points:
 Reviewer:                           |        Sponsor:
-------------------------------------+------------------------

Comment (by cohosh):

 I'm also finding that the IP addresses of snowflakes that fail *always
 fail*, once I go through the output of the attached stun.lua and do some
 manual inspection to remove false negatives. These false negatives happen
 because of traffic from old snowflake connections seeping into future
 packet captures.

 We have a lot of unique snowflakes, but we're starting to see repeats of
 snowflakes by IP after 400 runs, and I have yet to come across a case
 where a snowflake fails in one use but passes in another. I have seen some
 snowflakes that have failed twice on different days.

 This is encouraging in the sense that if we can come up with a test to
 check reachability, we can eliminate the problem (perhaps with #32938).

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/33666#comment:4>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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