A landmark calibration-based IP geolocation approach

Aiming at the existing IP geolocation approaches does not consider the errors of landmarks and delay; a new geolocation approach-utilized landmark calibration is proposed in this paper. At first, we find out these landmarks shared the nearest common router with a target IP by path detection; second, a deviation is assigned to each related landmark according to the corresponding organization and network connectivity; then, while the landmark’s location is regarded as the points within a possible area, target IP geolocation can be converted into a constrained optimization problem; at last, we can get the location estimation of the target IP by solving the above problem, as well as the real deviation of each landmark. The algorithm analysis and experimental results show that, when a landmark is not located in its claimed position, our geolocation approach can give a location for the measured target IP, as well as the location of the nearest common router for the unmeasured target IP.