[tor-project] Anti-censorship meeting notes, 2021 July 15

[Cecylia Bocovich]

Hey everyone,

Here are our meeting logs:

http://meetbot.debian.net/tor-meeting/2021/tor-meeting.2021-07-15-16.00.html

and our meeting pad:

Anti-censorship work meeting pad
--------------------------------

Next meeting: Thursday July 15th 16:00 UTC

Weekly meetings, every Thursday at 16:00 UTC, in #tor-meeting at OFTC
(channel is logged while meetings are in progress)

== Goal of this meeting ==

Weekly checkin about the status of anti-censorship work at Tor.
Coordinate collaboration between people/teams on anti-censorship at Tor.


== Announcements ==

    Tor Browser 10.5 released with Snowflake.

    https://blog.torproject.org/new-release-tor-browser-105

    Peep the charts 👀


https://metrics.torproject.org/rs.html#details/5481936581E23D2D178105D44DB6915AB06BFB7F


https://metrics.torproject.org/userstats-bridge-transport.html?start=2021-01-01&end=2021-07-10&transport=snowflake

    Job opening on the anti-censorship team:
https://www.torproject.org/about/jobs/software-developer-anticensorship-2/


== Discussion ==

    Snowflake usage metrics after stable release

    How's the performance in places that are geographically far from the
bridge?

    Is the spike globally distributed or centered on certain countries?

    Today's bridge-stats:

    bridge-stats-end 2021-07-14 17:36:29 (86400 s)

    bridge-ips
us=552,ru=456,by=336,cn=216,ir=168,de=144,gb=120,in=88,fr=80,br=72,it=64,ca=48,dz=48,tr=48,nl=40,at=32,...


== Actions ==



== Interesting links ==

    snowflake-client.exe in TB 10.5 detected as malware

    https://lists.torproject.org/pipermail/tor-talk/2021-July/045752.html


https://www.reddit.com/r/TOR/comments/of1gu3/windows_defender_latest_tor_browser_bundle/

    https://gitlab.torproject.org/tpo/web/support/-/issues/237



== Reading group ==

    We will discuss "" on


    Questions to ask and goals to have:

    What aspects of the paper are questionable?

    Are there immediate actions we can take based on this work?

    Are there long-term actions we can take based on this work?

    Is there future work that we want to call out, in hopes that others
will pick it up?


== Updates ==

Name:
    This week:
        - What you worked on this week.
    Next week:
        - What you are planning to work on next week.
    Help with:

         - Something you need help with.


cecylia (cohosh): last updated 2021-07-15
Last week:
    - reviewed snowflake!47
    - finished moat shim (bridgedb#32276)
    - bridgestrap reviews
    - bumped version of snowflake
    - updated snowflake proxy Docker image
    - attended some of PETS
    - deployed changes to snowflake.tp.o (snowflake-webext!18)
    - looked into snowflake performance tuning as a result of dcf's email
        -
https://lists.torproject.org/pipermail/anti-censorship-team/2021-July/000185.html

        - opened
https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/merge_requests/48

    - did some cleaning up of Snowflake repository READMEs (snowflake!49)
This week:
    - followup review for rdsys!11
    - more work on snowflake documentation (snowflake#40031)
    - check and maintain snowflake censorhsip measurements
(snowflake#32657)
    - start work on a Conjure PT for Tor
Needs help with:
    - review snowflake!48 (kcp + smux parameter tuning)
    - review of snowflake!49


arlolra: 2021-07-08

    Last week:

    - More snowflake!39

    Next week:

    - Maybe get back to snowflake-webext #10

    Help with:

    -


dcf: 2021-07-15

    Last week:

    Next week:

    - AMP cache rendezvous for snowflake
https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/issues/25985

    - look at KCP/smux buffer size increase
https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/merge_requests/48

    Help with:


agix:2021-07-15

    Last week:

    -Off due to final exams

    Next week:

    -Work on bridgebox for rdsys

    -More research on httpt #4

    Help with:

    -


hanneloresx: 2021-3-4

    Last week:

    - Submitted MR for bridgestrap issue #14

    Next week:

    - Finish bridgestrap #14

    - Find new issue to work on

    Help with:

    -


maxb: 2021-07-15

    Last week:

    - Opened
https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/issues/40054
re: utls for broker negotiation

    - Worked on github.com/max-b/nat-testing for
https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/issues/25595


    - Added a snowflake-proxy-no-nat and a snowflake-client-no-nat to
help with debugging

    - Successfully making connections from snowflake-client and
snoflake-client-no-nat through the snowflake-proxy-no-nat, but not
having any success with the snowflake-proxy (with nat).

    - Added a local dockerized STUN server

    Next week:

    - Use wireshark to figure out the difference between successful
snowflake-proxy-no-nat and unsuccessful snowflake-proxy-nat

    - Work on implementing different NAT types, particularly in a way
that's conducive to automatic testing

    - Add testing wrapper w/ "pass/fail" conditions


meskio: 2021-07-15

    Last week:

          - fix bridgestrap CollecTor bug so it properly reports if
bridges are functional (bridgestrap!8)

          - short bridgestrap CollecTor metrics by the hashed
fingerprint to don't reveal information (bridgestrap!9)

          - deploy bridgestrap with CollecTor metrics

          - report number of connected clients from snowflake webext to
the broker (snowlfake-webext!19)

       - gettor rdsys integration (rdsys!11 rdsys#32)

       - document our server setup in TPA wiki

    Next week:

    - submit the "final" gettor rdsys integration (rdsys!11 rdsys#32)


    Help with:

    -