16 May
2006
16 May
'06
10:58 a.m.
At 10:39 AM 5/16/2006, Tao Wan wrote:
Here is a tech report with a survey on geolocation and evasion techniques:
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.
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Daniel Senie