[90330] in North American Network Operators' Group
Re: Geo location to IP mapping
daemon@ATHENA.MIT.EDU (Daniel Senie)
Tue May 16 10:59:37 2006
Date: Tue, 16 May 2006 10:58:50 -0400
To: Tao Wan <twan@scs.carleton.ca>, nanog@nanog.org
From: Daniel Senie <dts@senie.com>
In-Reply-To: <Pine.LNX.4.44.0605161031450.25156-100000@quest.scs.carleto
n.ca>
Errors-To: owner-nanog@merit.edu
At 10:39 AM 5/16/2006, Tao Wan wrote:
>Here is a tech report with a survey on geolocation and evasion techniques:
>
>http://www.scs.carleton.ca/~jamuir/papers/TR-06-05.pdf
This document seems to miss one other fairly common way in which
geolocation fails: VPN. Whether a single user VPN session in which
the user's laptop obtains an IP address from the VPN gateway, or a
subnet extended out across a VPN to a remote office, the user(s) will
appear to be at the location of the VPN concentrator. While ping
latency, if even transported over the VPN, may show a greater
distance than other IP addresses in teh neighborhood, there is no
clear way to know why that latency is higher. It's odd this was omitted.
