Air Force Institute of Technology; Clarson, John R.
Synopsis "Geolocation of a Node on a Local Area Network"
Geolocation is the process of identifying a node using only its Internet Protocol (IP) address. Locating a node on a LAN poses particular challenges due to the small scale of the problem and the increased significance of queuing delay. This study builds upon existing research in the area of geolocation and develops a heuristic tailored to the difficulties inherent in LANs called the LAN Time to Location Heuristic (LTTLH).LTTLH uses several polling nodes to measure latencies to end nodes, known locations within the LAN. The Euclidean distance algorithm is used to compare the results wit h the latency of a target in order to determine the target's approximate location.Using only these latency measurements, LTTLH is able to determine which switch a target is connected to 95% of the time. Within certain constraints, this method is able to identify the target location 78% of the time. However, LANs are not always configured within the constraints necessary to geolocate a node. In order for LTTLH to be effective, a network must be configured consistently, with similar length cable runs available to nodes located in the same area. For best results, the network should also be partitioned, grouping nodes of similar proximity behind one switch.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
