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From: Mike Fikuart <mike@fikuart.com>
To: "<tor-talk@lists.torproject.org>" <tor-talk@lists.torproject.org>
Thread-Topic: GEOIP's
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Date: Fri, 5 Sep 2014 17:00:03 +0000
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Subject: [tor-talk] GEOIP's
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Hi Group,

I am looking into the various files used by the OR=92s and OP=92s and would=
 like to know more about the GEOIP file and use.  I have already seen in th=
e dir-spec<https://gitweb.torproject.org/torspec.git/blob/HEAD:/dir-spec.tx=
t#l1522> document that these GEOIP=92s are created in the =93Extra-info=94 =
document and relate to country codes for bridges and in turn was referred t=
o the blocking.pdf<https://svn.torproject.org/svn/projects/design-paper/blo=
cking.pdf> document, which went a bit further in the same vein.

The blocking.pdf (Design of a blocking-resistant anonymity system, Tor Proj=
ect technical report, Nov 2006) suggests "the compressed GEOIP database is =
only a few hundred kilobytes=94, but the geoip file on my relay is about 2M=
B.  Is this just because it is decompressed, now a much larger DB or is not=
 the DB being referred to in the document?

The geoip file has 82,363 different Country Code entries listed.  What do t=
hey relate to, as this would far exceed the bridges and relays?

I seem to remember (but now cannot find the reference) that the geoip=92s h=
ave been responsible for improving the routing of data or selection of rela=
ys for circuits.  Is this correct and how does this work?

I would appreciate an explanation or a point in the direction of the approp=
riate documentation, thanks.

Yours sincerely

Mike Fikuart IEng MIET

Mobile: 07801 070580
Office: 020 33840275
Blog: mikefikuart<mikefikuart.wordpress.com>
Skype: mikefikuart<skype:mikefikuart?call>
Twitter: mikefikuart<https://twitter.com/#!/MikeFikuart>
LinkedIn: mikefikuart<http://www.linkedin.com/in/mikefikuart>

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