[tor-bugs] #3145 [Tor Client]: excludeexitnodes by ip misleading when exit relay uses outboundbindaddress

Tor Bug Tracker & Wiki torproject-admin at torproject.org
Wed May 11 21:32:52 UTC 2011


#3145: excludeexitnodes by ip misleading when exit relay uses outboundbindaddress
------------------------+---------------------------------------------------
 Reporter:  arma        |          Owner:     
     Type:  defect      |         Status:  new
 Priority:  normal      |      Milestone:     
Component:  Tor Client  |        Version:     
 Keywords:              |         Parent:     
   Points:              |   Actualpoints:     
------------------------+---------------------------------------------------
 In #3143 we have a user who tried to set ExcludeExitNodes with an IP
 address based on the address of his Tor traffic. It didn't work, because
 the exit relay in question exits from a different IP address than it
 advertises in its descriptor.

 My first answer was "well, you should be excluding exit nodes by
 fingerprint". But that isn't a very satisfactory answer.

 We could have the descriptors (and microdescriptors, ugh) or the consensus
 mention alternate IPs for this purpose.

 It was easy for me to look up because moria1's cached-descriptor file says
 {{{
 @uploaded-at 2011-05-09 17:38:43
 @source "66.249.9.107"
 router ecksnet 66.249.9.183 80 0 0
 }}}
 but that isn't going to be so easy for others.

 There's also the tor bulk exit lists:
 https://metrics.torproject.org/data.html#exitlist
 which have this clause for the relay in question:
 {{{
 ExitNode 07E9456ED300CABCE2549119FE5B3CC27DA55585
 Published 2011-05-10 11:39:28
 LastStatus 2011-05-11 06:04:20
 ExitAddress 66.249.9.107 2011-05-10 12:33:34
 }}}
 but that's not exactly easier for users to know about or use either.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/3145>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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