Hey everyone!
Here are our meeting logs:
http://meetbot.debian.net/tor-meeting/2025/tor-meeting.2025-01-09-16.00.html
And our meeting pad:
Anti-censorship work meeting pad
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Anti-censorship
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Next meeting: Thursday,January 16 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: onyinyang
== 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:Development · Boards · Anti-censorship · GitLab
* The anti-censorship team's wiki page:
* Home · Wiki · The Tor Project / Anti-censorship / Team · GitLab
* 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:
* Merge requests · Anti-censorship · GitLab
* Project 158 <-- meskio working on it
* Issues · Anti-censorship · GitLab
== Announcements ==
\*
== Discussion ==
Last meeting 2024:
\* covert\-dtls in snowflake client and standalone proxy \-\- is there a plan for volunteer testing before merging?
\* https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/merge_requests/448
\* the recent partial blocking in Russia has ended, so asking for user testing there won't reveal whether the changed fingerprint makes a difference
\* but it still could be valuable to have users run with the patch as a kind of integration and interoperability test
\* need to test both standalone proxy and client
\* meskio can try running the patch on a standalone proxy
\* \(but there's no way to get per\-country statistics\)
\* implemented per\-country stadistics, will submit a MR
\* did test it and it looks good
\* covert\-dtls should be tested in both modes: randomize and mimic
\* theodorsm will produce instructions on how to compile and test the client with the help of cohosh
\* cohosh is working on it
\* and nina will translate to post it in ntc\.party
(2025)
* Supporting WebTunnel Early Data
* we can speed up webtunnel bootstrap by sending data over the handshake
* this will make the code a bit more complex
* is already implemented in V2Ray and easy to port
* lets keep it as an idea to see if this is really needed
== Actions ==
== Interesting links ==
\* https://forum.torproject.org/t/snowflake-daily-operations-december-2024-update/16726
\* Technical Analysis of the IRGFW \(IRanian Great FireWall\)
\* https://irgfw.report/projects/project1/
\* https://github.com/net4people/bbs/issues/441
== Reading group ==
\* We will discuss "Discovering and Measuring CDNs Prone to Domain Fronting" on January 16th
\* https://dl.acm.org/doi/10.1145/3589334.3645656
\* 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): 2025-01-09
Last week:
- gitlab reviews and todos
- wrote a fix to get snowflake working on firefox with strict privacy settings
- snowflake-webext#107, snowflake-webext!86
- started writing a feature for geoip library that uses CAIDA asn data
- snowflake#40421
This week:
- finish catching up on reviews
- asn mapping geoip feature
dcf: 2024-12-19
Last week:
- worked on making the Edgio CDN snowflake-broker.azureedge.net point to the new broker, but ran into problems with TLS certificate verification Set snowflake-broker.torproject.net as origin for Azure CDN configuration (#40427) · Issues · The Tor Project / Anti-censorship / Pluggable Transports / Snowflake · GitLab [anti-censorship-team] Re: Deprecation of Azure CDN from Edgio (azureedge.net), replaced by Azure Front Door (azurefd.net), affects snowflake-broker.azureedge.net - anti-censorship-team - lists.torproject.org
- opened an issue for an error in the Snowflake Broker Survival Guide: the documented way to read the broker logs doesn't work Snowflake broker survival guide journalctl command for logs doesn't work (#40428) · Issues · The Tor Project / Anti-censorship / Pluggable Transports / Snowflake · GitLab
- opened an issue to clean up the way multiple server names are handled on the snowflake broker Unify torproject.net and freehaven.net Nginx configs on Snowflake broker (#40430) · Issues · The Tor Project / Anti-censorship / Pluggable Transports / Snowflake · GitLab
- archived snowflake-webextension 0.9.0 and 0.9.2 [anti-censorship-team] Re: Anyone have a copy of the v0.9.0 Snowflake WebExtension CRX file? - anti-censorship-team - lists.torproject.org https://archive.org/details/snowflake-webextension-0.9.0 Snowflake WebExtension 0.9.2 : The Tor Project : Free Download, Borrow, and Streaming : Internet Archive
- answered questions from a student interested in experimenting with media streams in snowflake
Next week:
- open issue to have snowflake-client log whenever KCPInErrors is nonzero Deploy snowflake-server for QueuePacketConn buffer reuse fix (#40260) (#40262) · Issues · The Tor Project / Anti-censorship / Pluggable Transports / Snowflake · GitLab
- parent: Improve bug discovery process (#40267) · Issues · The Tor Project / Anti-censorship / Pluggable Transports / Snowflake · GitLab
- open issue to disable /debug endpoint on snowflake broker
Help with:
meskio: 2024-01-09
Last week:
- lyrebird dual-stack (IPv4/6) support in non-linux (lyrebird#40023)
- test covert-tls snowflake proxies (snowflake!448)
- improve circumvention settings doc (rdsys!446)
- catch up with messages, specially responding in the forum to questions
Next week:
- snowflake debian package
Shelikhoo: 2024-01-09
Last Week:
- [Pending] snowflake broker update/reinstall(cont.):
- [Awaiting Review] Unreliable+unordered WebRTC data channel transport for Snowflake rev2 (cont.)( Draft: Unreliable+unordered WebRTC data channel transport for Snowflake rev2 (!315) · Merge requests · The Tor Project / Anti-censorship / Pluggable Transports / Snowflake · GitLab ) improvements
- Merge request reviews
- Automate bridgeline update for snowflake(Automate bridgeline update for snowflake (#3) · Issues · The Tor Project / Anti-censorship / Connectivity Measurement / probeobserver · GitLab
)
- haproxy webtunnel fail claiming Tor browsers headers are malforned (haproxy webtunnel fail claiming Tor browsers headers are malforned (#154) · Issues · The Tor Project / Anti-censorship / Team · GitLab)
- Remove Snowflake broker configuration for "snowflake-broker-debianupgradestaging-j33r3zahe.torproject.net" (Remove Snowflake broker configuration for "snowflake-broker-debianupgradestaging-j33r3zahe.torproject.net" (#40429) · Issues · The Tor Project / Anti-censorship / Pluggable Transports / Snowflake · GitLab)
Next Week/TODO:
- Merge request reviews
- [Resume] Unreliable+unordered WebRTC data channel transport for Snowflake rev2 (cont.)( Draft: Unreliable+unordered WebRTC data channel transport for Snowflake rev2 (!315) · Merge requests · The Tor Project / Anti-censorship / Pluggable Transports / Snowflake · GitLab ) improvements
onyinyang: 2025-01-09
Last week(s):
- Break
- WIP on Automated key rotations
- WIP Conjure stuff for Project 173
Next week:
- Get conjure up and running (at least locally)
- implement utls for conjure
- start implementation of alternative registration methods
As time allows:
- Continue work on implementing issuer efficiency for check-blockage and trust-promotion protocols
- 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:
- 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: 2024-01-09
Last weeks:
- Offline
Next weeks:
- Fix merge conflicts in MR (Add covert-dtls to proxy and client (!448) · Merge requests · The Tor Project / Anti-censorship / Pluggable Transports / Snowflake · GitLab).
- Write instructions on how to configure covert-dtls with snowflake client
- Condensing thesis into paper (on hold)
Help with:
- Test stability of covert-dtls in snowflake MR
Facilitator Queue:
meskio onyinyang shelikhoo
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
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onyinyang
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