Cyber situational awareness: from geographical alerts to high-level management

This paper focuses on cyber situational awareness and describes a visual analytics solution for monitoring and putting in tight relation data from network level with the organization business. The goal of the proposed solution is to make different security profiles (network security officer, network security manager, and financial security manager) aware of the actual network state (e.g., risk and attack progress) and the impact it actually has on the business tasks, making clear the relationships that exist between the network level and the business level. The proposed solution is instantiated on the ACEA infrastructure, the Italian company that provides power and water purification services to cities in central Italy (millions of end users

Self-organising management of Grid environments

This paper presents basic concepts, architectural principles and algorithms for efficient resource and security management in cluster computing environments and the Grid. The work presented in this paper is funded by BTExacT and the EPSRC project SO-GRM (GR/S21939)

Joint dimensioning of server and network infrastructure for resilient optical grids/clouds

We address the dimensioning of infrastructure, comprising both network and server resources, for large-scale decentralized distributed systems such as grids or clouds. We design the resulting grid/cloud to be resilient against network link or server failures. To this end, we exploit relocation: Under failure conditions, a grid job or cloud virtual machine may be served at an alternate destination (i.e., different from the one under failure-free conditions). We thus consider grid/cloud requests to have a known origin, but assume a degree of freedom as to where they end up being served, which is the case for grid applications of the bag-of-tasks (BoT) type or hosted virtual machines in the cloud case. We present a generic methodology based on integer linear programming (ILP) that: 1) chooses a given number of sites in a given network topology where to install server infrastructure; and 2) determines the amount of both network and server capacity to cater for both the failure-free scenario and failures of links or nodes. For the latter, we consider either failure-independent (FID) or failure-dependent (FD) recovery. Case studies on European-scale networks show that relocation allows considerable reduction of the total amount of network and server resources, especially in sparse topologies and for higher numbers of server sites. Adopting a failure-dependent backup routing strategy does lead to lower resource dimensions, but only when we adopt relocation (especially for a high number of server sites): Without exploiting relocation, potential savings of FD versus FID are not meaningful

Research and Design in Unified Coding Architecture for Smart Grids

 Standardized and sharing information platform is the foundation of the Smart Grids. In order to improve the dispatching center information integration of the power grids and achieve efficient data exchange, sharing and interoperability, a unified coding architecture is proposed. The architecture includes coding management layer, coding generation layer, information models layer and application system layer. Hierarchical design makes the whole coding architecture to adapt to different application environments, different interfaces, loosely coupled requirements, which can realize the integration model management function of the power grids. The life cycle and evaluation method of survival of unified coding architecture is proposed. It can ensure the stability and availability of the coding architecture. Finally, the development direction of coding technology of the Smart Grids in future is prospected

IDEALIST control and service management solutions for dynamic and adaptive flexi-grid DWDM networks

Wavelength Switched Optical Networks (WSON) were designed with the premise that all channels in a network have the same spectrum needs, based on the ITU-T DWDM grid. However, this rigid grid-based approach is not adapted to the spectrum requirements of the signals that are best candidates for long-reach transmission and high-speed data rates of 400Gbps and beyond. An innovative approach is to evolve the fixed DWDM grid to a flexible grid, in which the optical spectrum is partitioned into fixed-sized spectrum slices. This allows facilitating the required amount of optical bandwidth and spectrum for an elastic optical connection to be dynamically and adaptively allocated by assigning the necessary number of slices of spectrum. The ICT IDEALIST project will provide the architectural design, protocol specification, implementation, evaluation and standardization of a control plane and a network and service management system. This architecture and tools are necessary to introduce dynamicity, elasticity and adaptation in flexi-grid DWDM networks. This paper provides an overview of the objectives, framework, functional requirements and use cases of the elastic control plane and the adaptive network and service management system targeted in the ICT IDEALIST project

Resilience and survivability of 5G networks

Title from PDF of title page viewed May 4, 2020Dissertation advisor: Deep MedhiVitaIncludes bibliographical references (page 130-134)Thesis (Ph.D.)--School of Computing and Engineering. University of Missouri--Kansas City, 20205G is going to be the central force behind the Fourth Industrial Revolution. It is the next-generation wireless technology which is slated to provide a wide range of services. It is geared to provide greater capacity, increased energy efficiency, and lower latency. A critical issue in service delivery is to provide resilience in 5G networks. In this thesis, we present 5G network architecture with network virtualization with multiple providers for network resilience that uses a self-organizing ad hoc network among the gNBs (macrosites). Thus, the primary provider for a 5G network may use a secondary provider for network resilience when network components fail. We present an optimization formulation and a heuristic for network survivability for our proposed 5G network for the primary network provider. Through simulations, we show our proposed heuristic is very close to optimal. The simulation results on the trade-off between using a provider's own network or rely on auxiliary capacity from another provider allow us to see the trade-off on availability. We also envision an environment where 5G network resilience is addressed in the presence of unlicensed spectrum and non-terrestrial networks. In this prospect, we present a framework for network survivability with network virtualization with multiple providers, and the use of unlicensed spectrum band and non-terrestrial network (NTN); this is done along with a self-organizing ad hoc network among the gNBs that may use a secondary provider for network resilience when the aggregation network and the backhaul network fails. In this architecture, we present an optimization model for survivability for a 5G networks provider (primary provider) that may also use a secondary provider in the event of a failure along with unlicensed spectrum and NTN. Our simulations show (1) the trade-off between using a primary provider's own network or rely on auxiliary capacity from the secondary provider, and (2) the use of unlicensed spectrum band and NTN enhances the resilience of the network.Introduction -- Research survey -- 5G Architecture for Resilience -- Proposed Optimization and Heuristic for 5G Network Resilience -- Unlicensed Spectrum band and Non-Terrestrial Network -- An Integrated 5G Architecture for Survivability -- Conclusion -- Appendix A. Optimization model file -- Appendix B. Heuristic code -- Appendix C. Topology Generatio