[tor-project] Anti-censorship team meeting notes, 2022-12-08

Shelikhoo shelikhoo at torproject.org
Thu Dec 8 18:42:41 UTC 2022


Hey everyone!

Here are our meeting logs:
http://meetbot.debian.net/tor-meeting/2022/tor-meeting.2022-12-08-15.58.html 
<http://meetbot.debian.net/tor-meeting/2022/tor-meeting.2022-03-31-15.59.html>

And our meeting pad:


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

Next meeting: Thursday, Dec 15 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 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?scope=all&utf8=%E2%9C%93&state=opened&assignee_id=None
         * 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%93&state=opened&label_name%5b%5d=Sponsor%2028&milestone_title=None
         * Sponsor 96
             * https://gitlab.torproject.org/groups/tpo/-/milestones/24

== Announcements ==

     * Cece is the new Outreachy intern working on Rdsys (adding a new 
social media platform) until March 5th! Please welcome her to the team!
     * No meetings December 29 neither January 5. We'll be AFK Dec 22 - 
Jan 7
     * Tor Browser 12.0 has the snowflake-02 bridge
         * https://blog.torproject.org/new-release-tor-browser-120/
         * 
https://metrics.torproject.org/rs.html#details/91DA221A149007D0FD9E5515F5786C3DD07E4BB0

== Discussion ==

     * snowflake-02 is live in TB 12
         * not in Orbot yet
         * plan to see how things go in Tor Browser, bring it up with 
Orbot in sponsor 96 meeting in January 2023
     * make obfs4 distinguishability reports public?
         * 
https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/obfs4/-/issues/40007
         * 
https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/obfs4/-/issues/40008
         * 
https://gitlab.torproject.org/tpo/anti-censorship/team/-/issues/91
         * we were waiting for a threshold of 50% of bridges to upgrade
         * some emails to gmail.com in the last batch of notifications 
bounced 
(https://lists.torproject.org/pipermail/tor-project/2022-December/003519.html)
         * we'll send one more batch of notifications, then plan to make 
public after the break on 2023-01-09
     * does ajax.aspnetcdn.com still work in turkmenistan??
         * it might be working, and we only use it for meek
         * snowflake uses cdn.sstatic.net
         * curl and dig tests are not showing injection for 
ajax.aspnetcdn.com nor cdn.sstatic.net from outside 
(https://github.com/net4people/bbs/issues/80#issuecomment-906533865)
     * rwails and NRL working on a new pluggable transport
         * any compatibility issues between C-tor and Arti? probably not.
         * how to run a PT in arti: 
https://gitlab.torproject.org/tpo/core/arti/-/issues/333

== Actions ==


== Interesting links ==

     * https://ntc.party/t/ajax-aspnetcdn-com/3571
         * Reported block of ajax.aspnetcdn.com in Russia, by TSPU, 
since mid-November?
         * 
https://explorer.ooni.org/chart/mat?probe_cc=RU&test_name=web_connectivity&domain=ajax.aspnetcdn.com&since=2022-11-07&until=2022-12-07&axis_x=measurement_start_day

== 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): last updated 2022-11-24
     Last week:
         - wrote a fix to make go fmt CI more verbose (snowflake!122)
     This week:
         - continue work on conjure client
         - more work on reputation-based bridge dist
         - fixup snowflake!108
     Needs help with:

dcf: 2022-12-08
     Last week:
         - disabled non-WireGuard SSH access to snowflake-02 
https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/issues/40122
         - merged some snowflake-server performance improvements, thanks 
itchyonion
             - 
https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/merge_requests/115
             - 
https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/merge_requests/118
         - asked to have snowflake-01's other IP addresses excepted in 
DDoS mitigation scripts 
https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/issues/40223#note_2859420
     Next week:
         - performance tuning on snowflake-02 bridge
         - make obfs4 distinguishability reports public
             - 
https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/obfs4/-/issues/40007
             - 
https://gitlab.torproject.org/tpo/anti-censorship/team/-/issues/91
         - document recent performance optimizations in Snowflake bridge 
installation guide
         - have snowflake-02's outgoing IP address added to DDoS 
mitigation scripts
         - make the number of KCP state machines a command-line option 
https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/merge_requests/119
         - migrate goptlib to gitlab 
https://gitlab.torproject.org/tpo/anti-censorship/team/-/issues/86#note_2823122
         - try Conjure PT development version 
https://forum.torproject.net/t/tor-dev-introducing-a-conjure-pt-for-tor/4429
     Help with:

meskio: 2022-12-08
    Last week:
        - update gettor/onionsproutsbot for the Tor Browser release
        - investigate why systemd freezes onionsproutsbot 
(onionsproutsbot#47)
        - some bridges appear offline in metrics.tpo (team#112)
        - support onbasca attempts to test bridge speed (onbasca#130)
        - onboard our outreachy intern
        - review merge request to use a different network on docker 
bridge images (docker-obfs4-proxy!10)
    Next week:
        - add localization support to rdsys



Shelikhoo: 2022-12-08
    Last Week:
         - [Merge Request Awaiting] Add SOCKS5 forward proxy support to 
snowflake (snowflake!64)
         - [Discussion & Deployment] Rollout of Distributed Snowflake 
Support
         - [Coding & Deployment] Proposal: Centralized Probe Result 
Collector (anti-censorship/team#54)
         - [Research] HTTPT Planning 
https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/httpt/-/issues/1
         - [Merge Request Done] Get Webtunnel to build together with tor 
browser
         - [Merge Request Done] fix "utls RoundTripper does not work 
when it is supposed to use HTTP/1"
    Next Week:
         - [Research] WebTunnel planning (Continue)
         - [Coding] More Reliable Raw Log Upload For log collector

Itchy Onion: 2022-11-24
     Last week:
         - continue working on snowflake in RACE; it passes one of the 
integration tests, but fails the second one with heavier load
       - worked on "Abbreviate `ice` list in bridge lines" (interruptted 
by RACE test results)
     This week:
       - continue working on snowflake in RACE; trying to cut down the 
number of times snowflake peers establish connection bc it's expensive 
(right now multiple connections are needed for messages between the same 
hosts)
       - review some MRs




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