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

meskio meskio at torproject.org
Tue Dec 7 10:33:59 UTC 2021


Quoting ValdikSS via anti-censorship-team (2021-12-06 18:53:55)
> Hello eveyone,
> 
> 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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