[tor-bugs] #33648 [Core Tor/Tor]: vanguards: What is the recommended value?

Tor Bug Tracker & Wiki blackhole at torproject.org
Thu Mar 19 23:19:26 UTC 2020


#33648: vanguards: What is the recommended value?
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 Reporter:  cypherpunks   |          Owner:  mikeperry
     Type:  task          |         Status:  assigned
 Priority:  Medium        |      Milestone:  Tor: unspecified
Component:  Core Tor/Tor  |        Version:
 Severity:  Normal        |     Resolution:
 Keywords:  vanguards     |  Actual Points:
Parent ID:                |         Points:
 Reviewer:                |        Sponsor:
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Comment (by mikeperry):

 Q1 - Smaller values for max circuit age may make you stand out a little.
 Completely idle circuits are held open for about an hour, give or take. If
 you never exceed an hour for them, you might stand out over a long period
 of time. 2 or 3 should not be noticeable, though. The main purpose of this
 option is to avoid deliberately held open application connections from
 keeping circuits and TLS streams opened so long that they are the only
 thing on the TLS connection (Tor relays rotate TLS connections about
 1x/week).

 Q3 - The retry of a truncated HTTP GET is not guaranteed. I think when asn
 and I tested onionshare, the GET was not actually resumed by Tor Browser,
 and/or onionshare shut down the service as soon as the GET got cut off..

 Q4 - Packet rate can't easily be limited by the control port. You *might*
 be able to limit general data rate with BandwidthRate torrc option, but I
 am not 100% sure that will apply to onion service traffic.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/33648#comment:5>
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