Re: tortila as a bad exit

[Scott Bennett <bennett@xxxxxxxxxx>]

     On Mon, 11 Aug 2008 07:08:13 -0400 Roger Dingledine <arma@xxxxxxx>
wrote:
>On Mon, Aug 11, 2008 at 04:35:22AM -0500, Scott Bennett wrote:
>>      The latest consensus and status documents show that the exit node
>> nicknamed "tortila" still has the "Bad Exit" flag from only one authority.
>> I was wondering what criteria each of the authority operators use to decide
>> whether/when to assign the "Bad Exit" flag to a server's listing in their
>> authority server's status documents.  Thanks!
>
>(I've been at defcon and black hat the past week, so have only been
>peripherally watching the or-talk list.)
>
>My impression from reading the posts is that tortila's craziness is
>another instance of bug 779:
>https://bugs.torproject.org/flyspray/index.php?do=details&id=779

     I'm not convinced.  It hasn't taken any 300 circuits for me.  It seems
to happen every time I have a circuit that exits via tortila.  It happens
with every destination web page.  It's not just port 80 either:  if I try
to use PuTTY for a ssh exit through tortila, I get an almost immediate SOCKS
error message, and the session window closes.  No login: prompt ever appears
before the window is shut down.  It does not seem random at all.
>
>We're working on fixing it. This looks like a real bug, and a really
>bad one at that. Marking all the exit nodes as badexit (which it looks
>like we'd have to do by this metric) is going to make it harder to track
>it down.
>
>One of the next steps is to try to learn how to induce the bug. We're
>working on that from several different angles.

     Well, if the bug is at tortila, then you should be able to produce it
every time you try it.  Have you tried it yet yourself?
>
>Any help ya'll can provide would be useful. :)
>
     If I notice anything new, sure, but I've added to my ExcludeNodes list,
so I don't see the problem unless I deliberately choose tortila as the exit
for a circuit.
     Meanwhile I would still like to know the answer to my question regarding
criteria for a Bad Exit flag to be assigned.  I gather that the various
authority operators are each free t decide by themselves the criteria they
will use, which is why I was asking for the information from each of the
authority operators.


                                  Scott Bennett, Comm. ASMELG, CFIAG
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