[anti-censorship-team] Snowflake (DTLS) block in Russia

ValdikSS iam at valdikss.org.ru
Tue Dec 7 10:30:09 UTC 2021


Do I understand it right that if I enable the switch on 
https://snowflake.torproject.org/ page or install the extension in the 
browser, people will connect using my browser (and hence default WebRTC 
implementation which won’t be blocked) eventually?

I can ask people to do that.


On 07.12.2021 13:28, meskio wrote:
> Quoting ValdikSS via anti-censorship-team (2021-12-06 18:53:55)
>> There's ongoing Tor block on certain Russian ISPs, which on top of everything
>> else includes Snowflake censorship using DPI.
>>
>> DTLS connection never establishes and gets filtered in
>> ClientHello/ServerHello sequence.
>>
>> Check the attached dumps from Tele2 cellular operator (as12958) made on
>> 3 and 6 December 2021.
>>
>> More information here:
>> https://ntc.party/t/ooni-reports-of-tor-blocking-in-certain-isps-since-2021-12-01/1477
> 
> The related issue:
> https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/issues/40014
> 
> Thanks for the dumps.
> 
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