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Re: [or-cvs] r12599: more progress on the geoip proposal (tor/trunk/doc/spec/proposals)



On Monday 03 December 2007 11:24:27 you wrote:
> On Thu, Nov 29, 2007 at 08:58:16PM +0000, Robert Hogan wrote:
> > >Is it sufficient just to add a new GETINFO command?
> > >    GETINFO ip-to-country/128.31.0.34
> > >  250+ip-to-country/128.31.0.34="US","USA","UNITED STATES"
> >
> > Other commands that would be useful:
>
> Speaking of which, I hear that Tork lets users specify entry / exit by
> country. 

Only exit by country.

> Can you describe how this works? (What the interface for the 
> user is, 

http://roberthogan.net/images/preferredexits.jpg
http://roberthogan.net/images/selectingservers.jpg
http://roberthogan.net/images/excludeexits.jpg

 The user can prefer/exclude servers from the network server list (the list 
can be filtered in multiple ways to allow easy selection of multiple servers 
at a time). 

There's also a pseudonymous browsing button ('Citizen of') which allows you to 
select the country you would like to 'browse from'. TorK then tells tor to 
only use exits from that country.

> how Tork obtains the geoip data and how much it can be trusted 

The geoip data is bundled with tork. There's no mechanism for updating it 
currently, but i do refresh it between releases. Tork uses the geoip country 
db only. It seems to be fairly reliable - I've never noticed a whois on a 
server entry contradict the server's flag, for what that's worth. The older 
the database the more 'unknown' servers you get - TorK indicates these with a 
question mark icon.

> and what attacks exist, 

I wonder .. ;-)

> what part of the the controller interface it uses with tor,

exitnodes, strictexitnodes, exludenodes, strictexcludenodes

>  any issues you ran into it adding it, 

the most annoying thing is having to manage references to the fp's everywhere. 
I haven't done this elegantly but it appears to be reliable. overall it was 
quite a straightforward feature to add.


> whether the geoip proposal 
> I've been working on would complement it or force a redesign, etc?)
complement, I would say!


>
> Thanks!
> --Roger


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