Hey everyone!
Here are our meeting logs:
http://meetbot.debian.net/tor-meeting/2021/tor-meeting.2021-10-14-15.59.html
and our meeting pad:
Anti-censorship work meeting pad --------------------------------
Next meeting: Thursday October 14th 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 ==
== Discussion ==
Snowflake usage is approaching meek levels
https://metrics.torproject.org/userstats-bridge-transport.html?start=2021-07...
Comparison of throughput through bridges:
flakey: https://metrics.torproject.org/rs.html#details/5481936581E23D2D178105D44DB69...
meek bridge: https://metrics.torproject.org/rs.html#details/8F4541EEE3F2306B7B9FEF1795EC3...
PT spec v2.2.1 [RFC] -- https://github.com/Pluggable-Transports/Pluggable-Transports-spec/tree/main/...
comments requested
for now, put feedback in github issues
anadahz is working on providing a text format for easier commenting
PTIM 2021 registration closes at October 17th 2021 AoE -- https://www.pluggabletransports.info/ptim2021/
Unifying bridge/broker domain names? All these different names point to the same place
proxy uses snowflake-broker.bamsoftware.com and snowflake.bamsoftware.com
webext uses snowflake-broker.freehaven.net and snowflake.freehaven.net
client uses snowflake-broker.torproject.net
https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowf... would make all use torproject.net; closed without action, see http://meetbot.debian.net/tor-meeting/2019/tor-meeting.2019-08-15-16.59.log....
https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowf... changed CNAME for freehaven.net to avoid malware detection problems
https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowf... if other people start embedding domain names in their configs, it becomes harder for us to change in the future
Note that torproject.net might be blocked in the UK: https://gitlab.torproject.org/legacy/trac/-/issues/31250#note_2330960
Choose a reading to discuss :)
== Actions ==
== Interesting links ==
Using censor middleboxes to amplify DoS attacks:
https://geneva.cs.umd.edu/posts/usenix21-weaponizing-censors/ https://lwn.net/Articles/869842/
== Reading group ==
We will discuss "Characterizing Transnational Internet Performance and the Great Bottleneck of China" on 2021-10-28
https://censorbib.nymity.ch/#Zhu2020a
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 2021-10-14 Last week: - worked on snowflake simulations in shadow (snowflake#40026) - updated docker obfs4 bridge image to 0.7 - https://hub.docker.com/r/thetorproject/obfs4-bridge/tags - helped network health team contact bridge operators running old tor versions (core/tor#40480) - generated reachability plots for our new rotating IP bridges (censorship-analysis#40020) - opened MR to unify broker/bridge domains for snowflake.git (snowflake!59, snowflake-webext!22) This week: - automate blocking detection for rotating IP bridges (censorship-analysis#40020) - finish up snowflake library changes for v2 (snowflake#40063) - more snowflake performance work (snowflake#40026) Needs help with: - review of snowflake!59 and snowflake-webext!22
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: 2021-10-14
Last week:
- snowflake Azure bookkeeping https://gitlab.torproject.org/tpo/anti-censorship/team/-/wikis/Snowflake-cos...
Next week:
- review broker domain name normalization https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowf... https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowf...
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: 2021-09-23
Last week:
- Worked on https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowf... re: utls for broker negotiation
- Had conversation with someone about upstream utls http round tripper https://github.com/refraction-networking/utls/pull/74
- Too busy with work :/
Next week:
- _Really_ want to get a PR for utls round tripper
meskio: 2021-10-14
Last week:
- honour bridge operator distribution request (rdsys!16)
- update circumvention settings distributor for TB needs (rdsys#59)
- extend zoossh to parse bridge descriptors and consensus files
https://github.com/NullHypothesis/zoossh/pull/13/
- digg into bridgedb bridge storage to replace it by rdsys (bridgedb#40031)
- update obfs4 bridge docker documentation
https://gitlab.torproject.org/tpo/web/community/-/merge_requests/99
Next week:
- make bridgedb a rdsys distributor (bridgedb#40031)
- update gettor links (gettor#82)
- figure out what happens with gitlab gettor repo