Hey everyone!

Here are our meeting logs:

http://meetbot.debian.net/tor-meeting/2022/tor-meeting.2022-05-26-16.00.html

And our meeting pad:

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

Next meeting: Thursday June 9nd 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 check-in about the status of anti-censorship work at Tor. Coordinate collaboration between people/teams on anti-censorship at Tor.

== 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 28 * must-do tickets: https://gitlab.torproject.org/groups/tpo/-/milestones/10 * possible tickets: https://gitlab.torproject.org/groups/tpo/-/issues?scope=all&utf8=%E2%9C%... * Sponsor 96 * https://gitlab.torproject.org/groups/tpo/-/milestones/24

== Announcements ==

* anti-censorship irc channel: #tor-anticensorship @ irc.oftc.net

== Discussion ==

Endless loop on the latest snowflake: Tor NOTICE: Managed proxy "TorBrowser\Tor\PluggableTransports\snowflake-client.exe": broker failure timed out waiting for answer! Tor NOTICE: Managed proxy "TorBrowser\Tor\PluggableTransports\snowflake-client.exe": connection failed timeout waiting for DataChannel.OnOpen

* Implement metrics to measure snowflake churn (https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowf...) is now under review. Comments are welcome (https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowf...) * count disctinct proxy ips, to see how fast they change

* enforce 2FA in gitlab * all accounts with group commit access have 2FA in gitlab already :)

== Actions ==

*

== Interesting links ==

== Reading group ==

* We will discuss "Even Censors Have a Backup: Examining China's Double HTTPS Censorship Middleboxes" on June 23 * https://dl.acm.org/doi/10.1145/3473604.3474559 * 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 2022-06-02 Last week: - updated gitlab CI to include go v1.18 (snowflake#40144) - Remove redundant NAT check at standalone proxy startup (snowflake#40146) - resolved snowflake#40145 - reviews This week: - continued work on conjure PT - continue snowflake maintenance tasks Needs help with:

dcf: 2022-06-02 Last week: - set up access to snowflake-02 bridge site for shelikhoo https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowf... - posted about other DTLS fingerprints that are being filtered in Russia https://gitlab.torproject.org/tpo/anti-censorship/censorship-analysis/-/issu... Next week: - look at STATUS VERSION proposal https://gitlab.torproject.org/tpo/core/torspec/-/merge_requests/63 Help with:

meskio: 2022-06-02 Last week: - use systemd to run bridgedb (team#72) - update debian package for snowflake (snowflake#40143) - don't use entropy in snowflake tests (snowflake!96) - contact cymru about their builtin bridges, as they have an old version of obfs4proxy Next week: - start working on gettor (rdsys#105) Shelikhoo: 2022-05-26 Last Week: - [Merge Request] Add Distributed Snowflake Server Support (snowflake!87) - [Merge Request] Distributed Snowflake Bridges (Javascript ver.) (snowflake-webext!29) - [Merge Request] Implement metrics to measure snowflake churn (https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowf...) (snowflake!95) - [Merge Request Awaiting] Add SOCKS5 forward proxy support to snowflake (snowflake!64) - [Discussion & Deployment] Migrating Controlling git repo to Tor Gitlab Instance (shelikhoo/LogCollectorAncillary#5) <- awaiting/blocked Next Week: - [Coding] Distributed Snowflake Bridges (continue) - [Coding & Deployment] Proposal: Centralized Probe Result Collector (anti-censorship/team#54) - [Research & Coding] WebSocket + CDN Based Probe Control Connection Forwarder (shelikhoo/LogCollectorAncillary#3) - [Merge Request] Implement metrics to measure snowflake churn (https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowf...) - [Research & Discussion] HTTPT & V2Ray related

Itchy Onion: 2022-06-02 Last week: - work on s28 issue 81 (race conditions in broker) This week: - continue working on snowflake !93 (add tests) - ongoing debugging with s28 (there are other issues, not sure if related to issue 81 yet) - working on issue 40117 (display NAT log type to stderr in nonverbose mode)