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Re: [tor-bugs] #5028 [Ooni]: Tor bridge scanning
#5028: Tor bridge scanning
----------------------------+-----------------------------------------------
Reporter: hellais | Owner: runa
Type: project | Status: closed
Priority: normal | Milestone: Sponsor F: March 15, 2012
Component: Ooni | Version:
Resolution: implemented | Keywords:
Parent: | Points:
Actualpoints: |
----------------------------+-----------------------------------------------
Changes (by karsten):
* status: assigned => closed
* resolution: => implemented
Comment:
Summarizing this sponsor F deliverable:
We developed a tool for scans of bridge lists which attempts to either
open a simple TCP connection to the bridge's OR port or that will perform
a full Tor handshake to the bridge. We tested the scanner by running a
[https://trac.torproject.org/projects/tor/ticket/5028#comment:35 scan from
.de] and comparing results to bridge reachability information obtained
from the bridge authority in .nl. We also performed a
[https://trac.torproject.org/projects/tor/ticket/5028#comment:45 scan from
.cn] and found that over 80% of bridges were unreachable. We compared
active scan results to
[https://trac.torproject.org/projects/tor/ticket/5028#comment:48 passive
usage statistics] and confirmed that bridges that were found as
unreachable in the scan also reported significantly fewer connections from
.cn than other bridges.
I'm closing this project ticket. Any further discussion or analysis
should go in a new ticket.
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/5028#comment:49>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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