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