[tor-bugs] #34129 [Circumvention/Snowflake]: Use STUN to determine NAT behaviour of peers

[Tor Bug Tracker & Wiki]

#34129: Use STUN to determine NAT behaviour of peers
-------------------------------------+------------------------------
 Reporter:  cohosh                   |          Owner:  cohosh
     Type:  enhancement              |         Status:  needs_review
 Priority:  Medium                   |      Milestone:
Component:  Circumvention/Snowflake  |        Version:
 Severity:  Normal                   |     Resolution:
 Keywords:                           |  Actual Points:
Parent ID:                           |         Points:
 Reviewer:                           |        Sponsor:  Sponsor28
-------------------------------------+------------------------------
Changes (by cohosh):

 * status:  assigned => needs_review


Comment:

 An update on this: users with symmetric NATs still have a very poor
 experience with snowflake. I'm working towards a solution that will have
 the broker match clients with restricted NATs with proxies on unrestricted
 NATs. Here's a start to that, with a common NAT discovery utility and an
 example of integration at the client:

 https://github.com/cohosh/snowflake/pull/31

 My next steps will be to:
 - implement NAT discovery on standalone proxies
 - modify the heuristics on web-based proxies
 - modify the broker to perform the updated proxy-matching

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/34129#comment:14>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online