Hey everyone! Here are our meeting logs: http://meetbot.debian.net/tor-meeting/2025/tor-meeting.2025-05-08-16.00.html And our meeting pad: Anti-censorship -------------------------------- Next meeting: Thursday, May 15 16:00 UTC Facilitator: shelikhoo ^^^(See Facilitator Queue at tail) Weekly meetings, every Thursday at 16:00 UTC, in #tor-meeting at OFTC (channel is logged while meetings are in progress) This week's Facilitator: meskio == Goal of this meeting == Weekly check-in about the status of anti-censorship work at Tor. Coordinate collaboration between people/teams on anti-censorship at the Tor Project and Tor community. == Links to Useful documents == * Our anti-censorship roadmap: * Roadmap:https://gitlab.torproject.org/groups/tpo/anti-censorship/-/boards * The anti-censorship team's wiki page: * https://gitlab.torproject.org/tpo/anti-censorship/team/-/wikis/home * Past meeting notes can be found at: * https://lists.torproject.org/pipermail/tor-project/ * Tickets that need reviews: from projects, we are working on: * All needs review tickets: * https://gitlab.torproject.org/groups/tpo/anti-censorship/-/merge_requests?sc... * Project 158 <-- meskio working on it * https://gitlab.torproject.org/groups/tpo/anti-censorship/-/issues/?label_nam... == Announcements == * == Discussion == * About SnowflakeStaging(https://gitlab.torproject.org/shelikhoo/snowflakestaging) * Please have a trial of the Snowflake Packet Transport Mode! * Relicense as MIT BSD 3Clause * Anything we wants to modify? * Anything we wants to add? * We will discuss this again this week to get feedback since other snowflake developers were away last week * cohosh will review it and provide feedback * Find a long term solution for utls downgrade check * https://metrics.torproject.org/userstats-bridge-combined.html?start=2025-02-... * that was an emergency patch to backport the uTLS security update * https://gitlab.torproject.org/shelikhoo/utls-temporary * https://gitlab.torproject.org/shelikhoo/utls-temporary/-/commit/55c892a09c81... * we can't update uTLS because we need to keep supporting go 1.21 until Firefox ESR 140 (September) * we'll maintain our fork until that date * RFC: Collect Snowflake Proxy Pool Health Information (https://gitlab.torproject.org/tpo/anti-censorship/connectivity-measurement/l...) * will try to do the analisys with the current tools and explore more if the change on the loging system is needed * deprecate obfs4-bridge docker image for arm and 386 * https://gitlab.torproject.org/tpo/anti-censorship/docker-obfs4-bridge/-/issu... == Actions == == Interesting links == * Big uptick in (especially) snowflake users from Turkmenistan since 2025-04-28 * https://metrics.torproject.org/userstats-bridge-combined.html?start=2025-02-... * https://gitlab.torproject.org/tpo/anti-censorship/censorship-analysis/-/issu... == 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): 2025-05-08 Last week: - pair debugging phantombox with onyinyang - pair debugging conjure test network setup with ln5 - conjure#52 - presented project 173 work at all hands - worked on fix for CDN77 domain fronting with conjure - conjure#49 This week: - support conjure work - follow up on snowflake rendezvous failures - reduce/remove use of mutexes for broker metrics (snowflake#40458) - take a look at potential snowflake orbot bug - https://github.com/guardianproject/orbot-android/issues/1183 dcf: 2025-05-08 Last week: - commented on @luiz proposal for an updated FEP pluggable transport https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/lyreb... Next week: - open issue to have snowflake-client log whenever KCPInErrors is nonzero https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowf... - parent: https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowf... Help with: meskio: 2024-05-08 Last week: - containarize a test bridge authority (rdsys#219) - investigate why we don't distribute webtunnel bridges over https some days (rdsys#262) - fix obfs4-bridge docker parser to allow params with = (docker-obfs4-bridge#23) - evaluate the deprecation of arm and 386 on obfs4-bridge docker image (docker-obfs4-bridge#25) Next week: - steps towards a rdsys in containers (rdsys#219) - investigate why we don't distribute webtunnel bridges over https some days (rdsys#262) Shelikhoo: 2024-05-08 Last Week: - [Testing] Unreliable+unordered WebRTC data channel transport for Snowflake rev2 (cont.)( https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowf... ) testing environment setup/research - Research Collect Snowflake Proxy Pool Health Information (https://gitlab.torproject.org/tpo/anti-censorship/connectivity-measurement/l...) - Snowfalke Staging Server Experiment - Vantage point maintainence - Merge request reviews Next Week/TODO: - Merge request reviews - [Testing] Unreliable+unordered WebRTC data channel transport for Snowflake rev2 (cont.)( https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowf... ) improvements - Research about designing an armored bridge line sharing URL format https://gitlab.torproject.org/tpo/anti-censorship/team/-/issues/126 - Vantage point maintainence - Snowfalke Staging Server Experiment(Almost Done ^~^) onyinyang: 2025-05-08 Last week(s): - Got phantombox working - Tried to make progress on decoy routing - Looked into turbotunnel implementation for conjure, seems like overkill for now - Working on more straightforward improvements to bufferedconn for the time being Next week: - Continue on bufferedcomm improvements and other conjure reliability improvments for Objective 2: https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/conju... As time allows: - review Tor browser Lox integration https://gitlab.torproject.org/tpo/applications/tor-browser/-/merge_requests/... - add TTL cache to lox MR for duplicate responses: https://gitlab.torproject.org/tpo/anti-censorship/lox/-/merge_requests/305 - Work on outstanding milestone issues: - key rotation automation Later: pending decision on abandoning lox wasm in favour of some kind of FFI? https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/43096): - add pref to handle timing for pubkey checks in Tor browser - add trusted invitation logic to tor browser integration: https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/42974 - improve metrics collection/think about how to show Lox is working/valuable - sketch out Lox blog post/usage notes for forum (long term things were discussed at the meeting!): - brainstorming grouping strategies for Lox buckets (of bridges) and gathering context on how types of bridges are distributed/use in practice Question: What makes a bridge usable for a given user, and how can we encode that to best ensure we're getting the most appropriate resources to people? 1. Are there some obvious grouping strategies that we can already consider? e.g., by PT, by bandwidth (lower bandwidth bridges sacrificed to open-invitation buckets?), by locale (to be matched with a requesting user's geoip or something?) 2. Does it make sense to group 3 bridges/bucket, so trusted users have access to 3 bridges (and untrusted users have access to 1)? More? Less? theodorsm: 2025-04-10 Last weeks: - fixing bugs in covert-dtls, only mimic DTLS 1.2 - Running proxy with covert-dtls - MR covert-dtls: https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowf... Next weeks: - Write instructions on how to configure covert-dtls with snowflake client (are we going to run a user test?) - Fix merge conflicts in MR (https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowf...). - Condensing thesis into paper Help with: - Test stability of covert-dtls in snowflake Facilitator Queue: shelikhoo onyinyang meskio 1. First available staff in the Facilitator Queue will be the facilitator for the meeting 2. After facilitating the meeting, the facilitator will be moved to the tail of the queue -- meskio | https://meskio.net/ -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- My contact info: https://meskio.net/crypto.txt -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Nos vamos a Croatan.