[tor-bugs] #25062 [Core Tor/Tor]: Block offending portscanners

["Tor Bug Tracker & Wiki" <blackhole@xxxxxxxxxxxxxx>]

#25062: Block offending portscanners
------------------------------+--------------------
     Reporter:  cypherpunks   |      Owner:  (none)
         Type:  defect        |     Status:  new
     Priority:  High          |  Milestone:
    Component:  Core Tor/Tor  |    Version:
     Severity:  Critical      |   Keywords:
Actual Points:                |  Parent ID:
       Points:                |   Reviewer:
      Sponsor:                |
------------------------------+--------------------
 Tor client:
 If the user tried to connect port 1, then 3, and 4
 and all of them failed(3 times in a row),
 deny connection to destination.onion for 3 minutes.


 Tor server:
 If the port request come from circuit X,
 and it is trying port 2, 5, and 8, and all of them failed(3 times in a
 row)
 deny connection from this circuit; just drop connection.


 This guy didn't allowing people from delisting his attacklist:
 http://zlal32teyptf4tvi.onion/

 Portscanning unauthorized servers are illegal. Why scanning tor service is
 okay?

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/25062>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online

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