[tor-bugs] #7349 [Tor]: Obfsbridges should be able to "disable" their ORPort

Tor Bug Tracker & Wiki blackhole at torproject.org
Sat Sep 26 00:40:57 UTC 2015


#7349: Obfsbridges should be able to "disable" their ORPort
-------------------------+-------------------------------------------------
     Reporter:  asn      |      Owner:  isis
         Type:  project  |     Status:  assigned
     Priority:  major    |  Milestone:  Tor: 0.2.???
    Component:  Tor      |    Version:
   Resolution:           |   Keywords:  tor-bridge SponsorZ tor-pt
Actual Points:           |  proposal-needed 028-triage
       Points:  9000+    |  Parent ID:
                         |    Sponsor:
-------------------------+-------------------------------------------------

Comment (by elypter):

 Replying to [comment:13 isis]:
 > This is about making the ORPort "ditchable".  However, it is ''not''
 about making bridges communicate to the next hop over PTs, since that
 would reveal that they are a bridge (and thus nullify most of the work I
 did for #7144).
 when i wrote this ia assumd that pluggable transports are being used that
 require a pass code so that active pobing would only be possible if the
 attacker already knows the bridge. a bridge guard only adds additional
 (bridge)security just like with a disabled or port.

 Replying to [comment:19 yawning]:
 >pointless extra overhead
 in the current state of western governments yes, tor is kind of tolerated
 but the ice is middle thick. however trusting in the status quo of the
 internet seems to be a rather risky security model in long term. there
 doesnt even have to be an evil government censor overlord. it could be
 enough if isps throttle down tor connections for "traffic optimization"
 and the goverment looks away. and yes ips are still public but there is
 not only a technical side to censorship there is also a legal one
 especially in democracies. ratelimiting or blocking specific pattern
 shapes might be perfectly legal while blocking ips is not.
 "ditching or port alltogether" was a bit provocative.
 what i wanted to promote was that the nodes should be able to choose their
 transport freely so the network can adapt to its environment.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/7349#comment:20>
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