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Routing policies used in the Internet can be restrictive, limiting communication between source-destination pairs to one path, when often better alternatives exist. To avoid route flapping, recovery mechanisms may be dampened, making adaptation slow. Unstructured overlays have been widely proposed to mitigate the issues of path and performance failures in(More)
A location service is the part of a naming architecture that maps identifiers to network addresses. Ideally, the identifiers are globally unique, persistent and semantic-free. It has been acknowledged that Distributed Hash Tables (DHTs) enable, for the first time, the use of semantic-free identifiers in massive, global networks. We argue that hierarchy is(More)
Supervisory Control and Data Acquisition (SCADA) systems are traditionally proprietary and well protected. Due to increasing use of commercial/open source technology and communication protocols, there are growing concerns about the associated security threats. SCADA networks are usually employed in critical infrastructure, therefore, not much technical data(More)
Overlay networks can be used to find working paths when direct underlay paths are anomalously slow, e.g. because of a network fault. Overlay paths should not use links that are involved in a fault, so choosing which overlay path to use often requires path monitoring, which introduces an overhead. By using a routing matrix ‘M’ to define which links are used(More)
Overlay networks can be used to find working paths when direct underlay paths are anomalously slow, e.g. because of a network fault. Overlay paths should not use links that are involved in a fault, so choosing which overlay path to use often requires path monitoring, which introduces an overhead. By using a routing matrix 'M' to define which links are used(More)
The Internet provides physical path diversity between a large number of hosts, making it possible for networks to use alternative paths when one path fails to deliver the required Quality of Service. However, for various reasons, many established protocols (e.g. de facto Internet inter-domain routing protocol, Border-Gateway Protocol BGP) do not fully(More)
Aerial Adhoc Networks are the new class of wireless adhoc networks, where node motion is not restricted in 2D plane as in (VANETs) but rather a 3D plane as these wireless nodes may be mounted on board Unmanned Aerial Vehicles (UAV). Current research literature argues that since flights occur at high altitudes, Line of Sight (LoS) propagation models suffice(More)