Thienne Johnson

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We propose a novel visualization, IMap, which enables the detection of security threats by visualizing a large volume of dynamic network data. In IMap, the Internet topology at the Autonomous System (AS) level is represented by a <i>canonical map</i> (which resembles a geographic map of the world), and aggregated IP traffic activity is superimposed in the(More)
This article presents a routing protocol that uses physical location information in diverse ways. This information can generate local working sub-areas, limiting the target of messages that pass through the network. Also it allows the exchange of data between different sub-areas, through the use of nodes that control the borders of the work areas. The(More)
Existing representations of the Internet do not provide information on why countries have a bigger Internet presence (e.g., Internet Service Providers) than others. In this paper we evaluate four geo-economic parameters (area, population, GDP and GDP per capita), looking for clues of why some areas or countries have developed ear-lier/later, faster/slower(More)
—Micromobility protocols aim to improve localized mobility by reducing the handover overhead. The Mobility Plane Architecture (MPA) was designed to support micromobility in standard IP or MPLS/GMPLS networks in a network-centric way, that is, the burden demanded by micromobility is placed on the network, not on the mobile nodes. The aim of this paper is to(More)
—Detecting malicious traffic streams in modern computer networks is a challenging task due to the growing traffic volume that must be analyzed. Traditional anomaly detection systems based on packet inspection face a scalability problem in terms of computational and storage capacity. One solution to this scalability problem is to analyze traffic based on IP(More)
As mobile devices become more prevalent in everyone's lives, they are being used as a interaction point for health applications. And because of the inherited mobility of such devices, healthcare applications can benefit and create new ways to provide services, such as on-demand exchange of medical records or emergency response scenarios. Thus it is(More)
—The Mobile Plane Architecture (MPA) is a network architecture that provides micro-mobility in a network-centric way, that is, the burden of supporting micro-mobility is placed on the network and not on the mobile nodes. MPA employs an overlay network above an IPv4 or IPv6 transport network in order to direct traffic to the mobile nodes. The overlay network(More)