Hey everyone!
Here are our meeting logs:
http://meetbot.debian.net/tor-meeting/2024/tor-meeting.2024-11-14-16.00.html
And our meeting pad:
Anti-censorship
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Next meeting: Thursday, November 21 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: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:
* The tor-project Archives
* Tickets that need reviews: from projects, we are working on:
* All needs review tickets:
* https://gitlab.torproject.org/groups/tpo/anti-censorship/-/merge_requests?scope=all&utf8=✓&state=opened&assignee_id=None
* Project 158 <-- meskio working on it
* Issues · Anti-censorship · GitLab
== Announcements ==
== Discussion ==
* Snowflake blocking in Russia November 2024
* Snowflake partially blocked in Russia 2024-11 (#40407) · Issues · The Tor Project / Anti-censorship / Pluggable Transports / Snowflake · GitLab
* No apparent difference in DTLS handshakes between proxies that continue working and proxies that stop working.
* Reports say that some proxies stop working, but only after transferring some traffic.
* Hard to test because we can't easily control the proxy. It would be a good idea to set up a small test deployment to afford us more experimental control.
* cohosh will work on that.
* Traffic analysis fingerprinting? An old padding patch: Potential TLS-over-DTLS blocking in China · Issue #255 · net4people/bbs · GitHub
* let's graduate rdsys to 1.0
* is more or less stable and since some months has replaced BridgeDB completelly
* next release will be 1.0
* future of the snowflake broker
* [eclips.is] The future of eclips.is - anti-censorship-team - lists.torproject.org
* we might need to start paying for the VM at elips.is from January
* we can separate the broker from probetest, probetest doesn't see all clients only the proxies
* the broker and the proxy are tied to the same domain name, we need first to separate them
* proxy/lib/snowflake.go · 239357509f339e49f7a68d9ca6acad8b7f9f67ab · The Tor Project / Anti-censorship / Pluggable Transports / Snowflake · GitLab
DefaultBrokerURL = "https://snowflake-broker.torproject.net/" DefaultNATProbeURL = "https://snowflake-broker.torproject.net:8443/probe"
* meskio will look into funding options for the broker
* on monday shelikhoo will start the move to the new broker
* WebTunnel Server utility command interface
* for certificate pinning we need to generate a hash of the certificate chain
* there is no standard tooling for that, we need to extend webtunnel to do that
* lets add a -gen-cert-fp flag
== Actions ==
== Interesting links ==
* "Measuring and analyzing node families in the Tor anonymous communication network" (Chinese) by Fang Binxing et al. 2015
* Measuring and analyzing node families in the Tor anonymous communication network
* Tor family was focused on design and given a family-level measurement of it. Based on Tor node families (over 3000) discovered from live Tor network data (from Jan. 2011 to Dec. 2012), a few characteristics of Tor node families were revealed, such as family size, bandwidth, geographical distribution as well as operators providing a few big families. The analysis validated the irreplaceable role played by family design in enhancing Tor's anonymity. Based on the measurement, security analysis showed the serious availability threat a compromised node family can cause to the Tor network. Besides, It also discussed Tor hidden families and the potential anonymity risk caused by them.
== 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): 2024-11-14
Last week:
- released new versions of snowflake and lyrebird
- reviewed Troll Patrol MR (lox!263)
- debugging the partial blocking of snowflake (snowflake#40407)
- meek bridge handover tasks (anti-censorship/team#133)
- Debugged problem with conjure deployment (conjure#44)
- Removed vod.sport1.de from censorship settings front domains
- reviewed MRs
This week:
- work with onyinyang on revisiting Lox BridgeTable fields and methods (lox#78)
- follow up on snowflake blocking as we get more vantage point data
- finish snowflake dependency upgrades that were causing problems
- take a look at snowflake web and webext translations and best practices
- make changes to Lox encrypted bridge table
- https://gitlab.torproject.org/tpo/anti-censorship/lox/-/merge_requests/147
Needs help with:
dcf: 2024-11-14
Last week:
-snowflake azure cdn bookkeeping Changes · Snowflake costs · Wiki · The Tor Project / Anti-censorship / Team · GitLab
- allocated resources for Debian 12 replacement snowflake broker Upgrade snowflake broker machine from Debian 10 (#40349) · Issues · The Tor Project / Anti-censorship / Pluggable Transports / Snowflake · GitLab
- opened issue to remember to turn off the old Debian 10 broker Decommission Debian 10 broker (#40412) · Issues · The Tor Project / Anti-censorship / Pluggable Transports / Snowflake · GitLab
Next week:
- comment on updates to unreliable snowflake transport Draft: Unreliable+unordered WebRTC data channel transport for Snowflake rev2 (!315) · Merge requests · The Tor Project / Anti-censorship / Pluggable Transports / Snowflake · GitLab
- 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:
- tell me when to restart the brokers for Upgrade snowflake broker machine from Debian 10 (#40349) · Issues · The Tor Project / Anti-censorship / Pluggable Transports / Snowflake · GitLab
meskio: 2024-11-14
Last week:
- review the status of the snowflake package dependencies (snowflake#40410)
- remove race conditions in rdsys (rdsys#223)
- fix email freezee in rdsys (rdsys#129)
- release and deploy rdsys
- inhibite ratio alerts (tpa/prometheus-alerts!60)
Next week:
- update snowflake proxy debian package
Shelikhoo: 2024-11-14
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
- [Awaiting Input] Review CI: fix `latest` container image tag. CI: fix `latest` container image tag. (!408) · Merge requests · The Tor Project / Anti-censorship / Pluggable Transports / Snowflake · GitLab
- Update Snowflake dependencies: Update probetest snowflake bridgeline & dependencies (!6) · Merge requests · The Tor Project / Anti-censorship / Connectivity Measurement / probeobserver · GitLab
- Update Snowflake WebExtension Domain: Adjust hostname of probe server (!85) · Merge requests · The Tor Project / Anti-censorship / Pluggable Transports / Snowflake WebExtension · GitLab
- Logcollector anomaly investigate: [China] Blocking Hetzner wholesale (#40052) · Issues · The Tor Project / Anti-censorship / censorship-analysis · GitLab
- Merge request reviews
Next Week/TODO:
- Merge request reviews
- Work on finishing snowflake container release(and fix the comments)
- Vantage point deployment in Iran
- Snowflake broker deployment
onyinyang: 2024-11-14
Last week(s):
- Refactored MR for test distributor implementation into
- Test distributor (!274) · Merge requests · The Tor Project / Anti-censorship / lox · GitLab
- Now this can remain in the main branch and the test distributor can be deployed with the --features test-branch flag
- wasm changes will remain on the testing branch while Consider dropping Lox's WASM (#43096) · Issues · The Tor Project / Applications / Tor Browser · GitLab is being sorted.
- Updated lox-zkp to account for thiserror upgrade that was causing artifact issues, fixed testing in lox-zkp
- working on refactor of Lox (library) protocols to improve issuing efficiency as described in: https://eprint.iacr.org/2024/1552.pdf
Next week:
- Fix up Troll-patrol MR
- Fix up wasm changes in Improve testing branch for Lox distributor/wasm interactions (!271) · Merge requests · The Tor Project / Anti-censorship / lox · GitLab
- Deploy test distributor
- Continue work on improving issuer efficiency in Lox protocols
- update lox protocols to return duplicate responses for an already seen request
- Work on outstanding milestone issues:
in particular: Increase the acceptable time for bridgeline failure (#69) · Issues · The Tor Project / Anti-censorship / lox · GitLab
- key rotation automation
Later:
pending decision on abandoning lox wasm in favour of some kind of FFI? Consider dropping Lox's WASM (#43096) · Issues · The Tor Project / Applications / Tor Browser · GitLab):
- add pref to handle timing for pubkey checks in Tor browser
- add trusted invitation logic to tor browser integration:
Lox module doesn't include trusted invitation redemption (#42974) · Issues · The Tor Project / Applications / Tor Browser · GitLab
- 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: 2024-10-24
Last weeks:
- Adjusting to post-student life
- Testing out beta releases of pion dtls and webrtc
Next weeks:
- Update Snowflake to use latest pion upstream releases
- Test Snowflake fork with covert-dtls
- Condensing thesis into paper
Help with:
- Feedback on thesis
Facilitator Queue:
onyinyang meskio 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
--
meskio | https://meskio.net/
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My contact info: https://meskio.net/crypto.txt
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Nos vamos a Croatan.