[tor-project] Anti-censorship meeting notes, 2021 August 26

[Cecylia Bocovich]

Hey everyone!

This is a little late, but here were our logs from the meeting last week:

http://meetbot.debian.net/tor-meeting/2021/tor-meeting.2021-08-26-15.59.html

and here is our meeting pad:

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

Next meeting: Thursday August 19th 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 ==

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


== Discussion ==



== Actions ==



== Interesting links ==

    USENIX Security 2021 papers
https://www.usenix.org/conference/usenixsecurity21/technical-sessions

    "Domain Shadowing: Leveraging Content Delivery Networks for Robust
Blocking-Resistant Communications"
https://www.usenix.org/conference/usenixsecurity21/presentation/wei

    "How Great is the Great Firewall? Measuring China's DNS Censorship"
https://www.usenix.org/conference/usenixsecurity21/presentation/hoang

    "Balboa: Bobbing and Weaving around Network Censorship"
https://www.usenix.org/conference/usenixsecurity21/presentation/rosen

    "Weaponizing Middleboxes for TCP Reflected Amplification"
https://www.usenix.org/conference/usenixsecurity21/presentation/bock

    "Defeating DNN-Based Traffic Analysis Systems in Real-Time With
Blind Adversarial Perturbations"
https://www.usenix.org/conference/usenixsecurity21/presentation/nasr


== 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 2021-08-26
Last week:
    - hiring tasks for ac team and network team
    - mostly just s28 integration/scrimmage
    - more work on making OONI's tor tests look more like tor
    - helped plan tor's autoconnect feature
This week:
    - more hiring and s28 meetings
    - censorship measurement tests and tools
    - reviews
        - snowflake!52 followup
        - snowflake#25595 followup
    - lots of miscellaneous gitlab TODOs
Needs help with:


arlolra: 2021-08-12

    Last week:

    - Migrate to v3 of the webextension manifest

    Next week:

    - Maybe get back to snowflake-webext #10

    - Write up the pitch for our use case for supporting creating
PeerConnections in background service workers
https://github.com/w3c/webrtc-extensions/issues/77

    Help with:

    -


dcf: 2021-08-19

    Last week:

    - snowflake CDN bookkeeping
https://gitlab.torproject.org/tpo/anti-censorship/team/-/wikis/Snowflake-costs

    - posted a summary of the Turkmenistan situation
https://ntc.party/t/recent-drop-in-tor-users-from-turkmenistan-testers-wanted/1192
https://gitlab.torproject.org/tpo/community/support/-/issues/40030

    Next week:

    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: 2021-08-26

    Last week:

    - make bridgestrap CollecTor metrics resistant to restarts
(bridgestrap#22)

    - change bridgedb to send obfs4 bridges by default over email
(bridgedb#50)

    - review gettor upload script mr (gettor!17)

    - review docker-obfs4-bridge multi arch build (docker-obfs4-bridge!4)

    - review docker-obfs4-bridge fix for the new debian release
(docker-obfs4-bridge!3)

    - review new translations for GettorWeb (gettor-web!7)

    Next week:

    - make censorship snapsot available on moat (bridgedb#40025)

    - act on comments on rdsys-gettor (rdsys!11)

    Help with:

    -