Hey everyone!

Here are our meeting logs: http://meetbot.debian.net/tor-meeting/2024/tor-meeting.2024-03-14-15.57.html

And our meeting pad:

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

Next meeting: Thursday, March 21 16:00 UTC Facilitator: meskio

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: shelikhoo

== 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 sponsors, we are working on:         * All needs review tickets:             * https://gitlab.torproject.org/groups/tpo/anti-censorship/-/merge_requests?sc...         * Sponsor 96 <-- meskio, shell, onyinyang, cohosh             * https://gitlab.torproject.org/groups/tpo/-/milestones/24         * Sponsor 150 <-- meskio working on it             * https://gitlab.torproject.org/groups/tpo/anti-censorship/-/issues/?label_nam...

== Announcements == - Elections in Russia (March 14 - 17)

== Discussion ==

Last week:     * should we deprecate docker-snowflake-proxy?         * There is now a snowflake Dockerfile for the proxy in the main snowflake repo         * https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowf...         * do we need to do something to integrate it in our release process?         * yes, we will deprecated         * shelikhoo will move that forward in this issue: https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowf...     * Fastly domain fronting updates         * https://github.com/net4people/bbs/issues/309         * https://gitlab.torproject.org/tpo/anti-censorship/team/-/issues/135 New:     * PTs removed from ios onionbrowser because of RAM constraints         * https://github.com/guardianproject/orbot/issues/1106     * snowflake-webextension still (2024-03-12) being rejected from Mozilla add-ons? https://paste.mozilla.org/Vh9jKk5g         * Error: Command failed: git submodule update --init -- translation         * fatal: not a git repository (or any of the parent directories): .git         * https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowf...

== Actions ==

== Interesting links ==

* https://github.com/getlantern/broflake Lantern's new Snowflake-like, uses QUIC, WASM, WebTransport

== 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): 2024-03-14     Last week:         - reviewed Lox MRs         - refactored Lox's bridge_replace function             - https://gitlab.torproject.org/tpo/anti-censorship/lox/-/merge_requests/143         - improved error types for lox-library::proto::*::request functions             - https://gitlab.torproject.org/tpo/anti-censorship/lox/-/merge_requests/144         - removed fixed length fields from Lox's BridgeLine struct             - https://gitlab.torproject.org/tpo/anti-censorship/lox/-/merge_requests/147         - responded to mozilla addon store rejection     This week:         - open MR to change front domain for OONI tests         - deploy snowflake sqs fix         - followup on web extension rejection from mozilla         - compile a list of next-steps for lox         - update wasm-bindgen fork to fix some bugs and hopefully upstream changes         - tor-browser-build updates for lox wasm + bindings generation         - Conjure bridge maintenance     Needs help with:

dcf: 2024-03-14     Last week:         - azure CDN bookkeeping https://gitlab.torproject.org/tpo/anti-censorship/team/-/wikis/Snowflake-cos...         - answered a question about Snowflake proxies https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowf...     Next week:         - review draft MR for unreliable data channels https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowf...         - 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...         - open issue to disable /debug endpoint on snowflake broker         - move snowflake-02 to new VM Help with:

meskio: 2023-03-14     Last week:         - make obfs4-bridge docker image work in armv7 (docker-obfs4-bridge#18)         - publish bridgestrap collector metrics every hour (bridgestrap#39)         - export bridge tests results on assignments.log (rdsys!280)         - document new assignments.log format on the metrics website (metrics/website!71)         - fix moat not distributing bridges config problem (rdsys#190)     Next week:         - captcha moat in rdsys

Shelikhoo: 2024-03-14     Last Week:                 - [Merge Request Done] Remove translation for Tor Project URL https://gitlab.torproject.org/tpo/anti-censorship/rdsys/-/merge_requests/278                 - Write WebTunnel Blog Post Draft                 - Prepare for 3-min presentation                 - Merge request reviews(a lots of them!)     Next Week/TODO:         - [Research] Inspect Snowflake Situation In China         - Prepare for 3-min presentation

onyinyang: 2023-03-14     Last week(s):         - continued prep for HACS/DRL meeting         - Sync-test rebase

This week:         - continue prep for HACS/DRL meeting         - Attend HACS, then RWC, then DRL meeting         (later things)         - improve metrics collection/think about how to show Lox is working/valuable         - sketch out Lox blog post/usage notes for forum         - attempt hyper upgrade again

(long term things were discussed at the meeting!): https://pad.riseup.net/p/tor-ac-community-azaleas-room-keep         - 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: 2023-03-14         Last weeks:             - Created a setup for extracting fingerprints from DLTS handshakes and analyzed the previous webrtc/dtls data sets from https://github.com/kyle-macmillan/snowflake_fingerprintability. Found more fingerprints than presented in the original paper, but the fingerprints are not present in newer snowflake versions.             - Contacted Sean DuBois at Pion, he is very supporting of the project and happy to merge features related to anti-censorsip             - Started on a setup for collecting DTLS handshakes to be used for mimicking             - Exploring and planning features for anti-fingerprinting techniques to implement in the Pion lib.         Next weeks:             - Creating a setup for generating DTLS handshakes of web-browsers with selenium/playwright. This will hopefully generate common handshakes/fingerprints         Help with: