Vidalia exit-country

[M]

Thanks for the info!

On Thu, Aug 21, 2008 at 5:18 AM, Camilo Viecco <cviecco at anml.iu.edu> wrote:

> Hello M
>
> Thanks for giving it a try. I have comments inline
>
> M wrote:
>
>> Hello friends I'm new on the list. I hope you bear with my questions and
>> problems.
>>
>> I just installed Camilo's version of Vidalia, and it seems i have a couple
>> of problems:
>>
>> 1) You can only exclude one country from the "invalidnodes" settings.
>>
> You can do multiple selections by pressing the 'Control (ctrl)' button when
> selecting
> the second (or next) country.
>
>>
>>
>> 2) You have to exclude it every time you start vidalia (it does not save
>> the settings)
>>
>> Are these bugs in my installation, or is the program like this?
>>
> It is a bug in the program. Exit countries should be saved. Thanks for
> finding it. I will fix it in a few days.
>
>>
>> 3) Also, how much does this reduce anonymity?
>>
>
> Placing any restrictions on the nodes most likely will reduce your
> anonymity. In particular limiting
> the exit country significanly reduces your anonymity as it is much cheaper
> for an attacker to place
> nodes in that country and thus your probability of selecting a 'bad' exit
> is higher.
> Reducining the number of other nodes could 'possibly' be bad for your
> anonymity. Part
> of Tor's attacker model assumes that there are many attackers that will not
> cooperate with each other.
> There might be more academic studies about these effects, but none come to
> my mind at the moment.
> Will let the list give you the pointers.
> (I think 2007 PETS IX attack on Tor would be a place to start
> (http://www.freehaven.net/anonbib/cache/murdoch-pet2007.pdf))
>
> Thank you for noticing AND submitting about the bug
>
> Camilo
>
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