[tor-bugs] #20348 [Metrics/Censorship analysis]: Kazakhstan blocking of vanilla Tor, 2016-06

Tor Bug Tracker & Wiki blackhole at torproject.org
Thu Oct 13 17:16:47 UTC 2016

#20348: Kazakhstan blocking of vanilla Tor, 2016-06
 Reporter:  dcf                          |          Owner:
     Type:  project                      |         Status:  new
 Priority:  Medium                       |      Milestone:
Component:  Metrics/Censorship analysis  |        Version:
 Severity:  Normal                       |     Resolution:
 Keywords:  censorship block kz          |  Actual Points:
Parent ID:                               |         Points:
 Reviewer:                               |        Sponsor:

Comment (by cypherpunks):

 > Did you mean that outside of kz, you saw the same weird server TCP
 options MSS=1351,NOP,NOP,NOP,EOL?

 Yes, this and weird acks, it's all about vpn transport to box. The same
 software (server and client side) was tested outside of kz and shows the
 same weirdness but no traffic to/from obfs4 with 80 port was
 blocked/stalled. It's independence weirdness, actual blockage happens

Ticket URL: <https://trac.torproject.org/projects/tor/ticket/20348#comment:7>
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