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Re: [tor-bugs] #25545 [Core Tor/Tor]: Figure out default vanguard script parameters



#25545: Figure out default vanguard script parameters
-------------------------------------------------+-------------------------
 Reporter:  asn                                  |          Owner:  asn
     Type:  defect                               |         Status:  closed
 Priority:  Medium                               |      Milestone:  Tor:
                                                 |  0.3.4.x-final
Component:  Core Tor/Tor                         |        Version:
 Severity:  Normal                               |     Resolution:  fixed
 Keywords:  tor-guard, guard-discovery, 034      |  Actual Points:
  -roadmap-master, 034-triage-20180328,          |
  034-included-20180328                          |
Parent ID:                                       |         Points:
 Reviewer:  mikeperry                            |        Sponsor:
                                                 |  SponsorV
-------------------------------------------------+-------------------------

Comment (by asn):

 Replying to [comment:9 mikeperry]:
 > I have a quick observation here: If I am understanding the source right,
 the pwnage time to compromise L2 is chosen for each relay in L2. These
 times come from the adversary model.
 >
 > Since these times come from a probability distribution, the more times
 we sample it (for more L2 guards), the more likely we are to get a lower
 value for time-to-compromise for that layer. I suppose this reflects
 reality somewhat. The more L2 guards there are, the more likely you're
 able to get to one of them faster than the others.
 >

 Yep, I also think that's normal.

 > Anyway I agree with the ultimate conclusion of your doc. I will get
 vanguards into a state that we can run a bunch of onionperf instances with
 it and compare 2-3-8 and 2-4-8 there.

 Sounds great.

 If we have no time for careful analysis here, we can also just launch with
 2-3-8 and depending on how that goes see if we want to bump it up to
 2-4-8.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/25545#comment:10>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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