[tor-bugs] #15513 [Tor]: Investigate lifetime of IPs on Hidden Services

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#15513: Investigate lifetime of IPs on Hidden Services
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     Reporter:  donncha      |      Owner:
         Type:  enhancement  |     Status:  new
     Priority:  normal       |  Milestone:
    Component:  Tor          |    Version:
   Resolution:               |   Keywords:  tor-hs
Actual Points:               |  Parent ID:
       Points:               |
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Comment (by karsten):

 New
 [https://people.torproject.org/~karsten/volatile/lifetimes-2015-04-10.pdf
 graphs] are available that should answer your questions:

 Replying to [comment:7 asn]:
 > Another nice stat would be the amount of IPs used by each HS over the
 whole measurement period. Did the HSes expose themselves to 12 IPs or to
 100 IPs?

 Added as fifth graph.

 > Another useful figure would be the maximum amount of times we see an IP
 in sequential descriptors of a HS. That should be 24 hours which is the
 maximum time an HS should keep an IP, but I'm curious to see if it
 reflects reality.

 That is (and has been) the first graph, "Lifetime of introduction points".
 Note that I fixed a bug in the analysis script that showed some lifetimes
 of over 40 hours.  That was wrong.  All lifetimes are below 25 hours, and
 that 25th hour may well be the result of truncating minutes of the hour in
 descriptor publication times.  So, I think your assumption is valid.

 > ~~I guess another graph that would be useful here (but not exactly
 related to IP health), is the number of descriptors per hour for each
 hidden service. I see that even the facebook HS has published 4 HS
 descriptors in a single hour sometimes.~~ Hm, just noticed we have this
 graph already. I'm wondering why I don't see facebook ever having 3 descs
 per hour in this graph, even though this seems to have happened in
 `publication-time 2015-03-19 22:00:00`.

 The old graphs contained daily averages.  I changed them all to CDFs,
 because we care more about distributions than about trends over time.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/15513#comment:8>
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