SDN/NFV-enabled satellite communications networks: opportunities, scenarios and challenges

In the context of next generation 5G networks, the satellite industry is clearly committed to revisit and revamp the role of satellite communications. As major drivers in the evolution of (terrestrial) fixed and mobile networks, Software Defined Networking (SDN) and Network Function Virtualisation (NFV) technologies are also being positioned as central technology enablers towards improved and more flexible integration of satellite and terrestrial segments, providing satellite network further service innovation and business agility by advanced network resources management techniques. Through the analysis of scenarios and use cases, this paper provides a description of the benefits that SDN/NFV technologies can bring into satellite communications towards 5G. Three scenarios are presented and analysed to delineate different potential improvement areas pursued through the introduction of SDN/NFV technologies in the satellite ground segment domain. Within each scenario, a number of use cases are developed to gain further insight into specific capabilities and to identify the technical challenges stemming from them.Peer ReviewedPostprint (author's final draft

Enabling digital grid for industrial revolution: self-healing cyber resilient platform

The key market objectives driving digital grid development are to provide sustainable, reliable and secure network systems that can support variety of applications against any potential cyber attacks. Therefore, there is an urgent demand to accelerate the development of intelligent Software-Defined Networking (SDN) platform that can address the tremendous challenges of data protection for digital resiliency. Modern grid technology tends to adopt distributed SDN controllers for further slicing power grid domain and protect the boundaries of electric data at network edges. To accommodate these issues, this article proposes an intelligent secure SDN controller for supporting digital grid resiliency, considering management coordination capability, to enable self-healing features and recovery of network traffic forwarding during service interruptions. A set of advanced features are employed in grid controllers to configure the network elements in response to possible disasters or link failures. In addition, various SDN topology scenarios are introduced for efficient coordination and configurations of network domains. Finally, to justify the potential advantages of intelligent secure SDN system, a case study is presented to evaluate the requirements of secure digital modern grid networks and pave the path towards the next phase of industry revolution

Managing the Cost of Usable Data Centers

The main topic of this paper is to identify problems and present an overview of Data Center environments. To identify problems and present the overviews of business data environments and the cost of usable data center for small-midsize business organization based type of requirements on the design is one of the most important concepts of managing cost. To maximized data center efficiency administrators implement Blade Server, Virtualization, SOA, and other recent technologies. The project process will focus on most leased data centers with provided space rather than specific applications that trend the way of design, and eliminating the significant impact of multiple physical storage devices. Data Centers are complex systems with a variety of technologies that require constantly evolving skills and knowledge that range from routing and switching to load balancing and security. This project will include research, collecting sources, discussing the issues associated with network attacks Data Centers, and reviewing the other key areas related to data center development will be cover the way server availability will describes how to design a highly available infrastructure, and describes how a load balancing device can monitor the availability of applications and servers

Data center resilience assessment : storage, networking and security.

Data centers (DC) are the core of the national cyber infrastructure. With the incredible growth of critical data volumes in financial institutions, government organizations, and global companies, data centers are becoming larger and more distributed posing more challenges for operational continuity in the presence of experienced cyber attackers and occasional natural disasters. The main objective of this research work is to present a new methodology for data center resilience assessment, this methodology consists of: • Define Data center resilience requirements. • Devise a high level metric for data center resilience. • Design and develop a tool to validate and the metric. Since computer networks are an important component in the data center architecture, this research work was extended to investigate computer network resilience enhancement opportunities within the area of routing protocols, redundancy, and server load to minimize the network down time and increase the time period of resisting attacks. Data center resilience assessment is a complex process as it involves several aspects such as: policies for emergencies, recovery plans, variation in data center operational roles, hosted/processed data types and data center architectures. However, in this dissertation, storage, networking and security are emphasized. The need for resilience assessment emerged due to the gap in existing reliability, availability, and serviceability (RAS) measures. Resilience as an evaluation metric leads to better proactive perspective in system design and management. The proposed Data center resilience assessment portal (DC-RAP) is designed to easily integrate various operational scenarios. DC-RAP features a user friendly interface to assess the resilience in terms of performance analysis and speed recovery by collecting the following information: time to detect attacks, time to resist, time to fail and recovery time. Several set of experiments were performed, results obtained from investigating the impact of routing protocols, server load balancing algorithms on network resilience, showed that using particular routing protocol or server load balancing algorithm can enhance network resilience level in terms of minimizing the downtime and ensure speed recovery. Also experimental results for investigating the use social network analysis (SNA) for identifying important router in computer network showed that the SNA was successful in identifying important routers. This important router list can be used to redundant those routers to ensure high level of resilience. Finally, experimental results for testing and validating the data center resilience assessment methodology using the DC-RAP showed the ability of the methodology quantify data center resilience in terms of providing steady performance, minimal recovery time and maximum resistance-attacks time. The main contributions of this work can be summarized as follows: • A methodology for evaluation data center resilience has been developed. • Implemented a Data Center Resilience Assessment Portal (D$-RAP) for resilience evaluations. • Investigated the usage of Social Network Analysis to Improve the computer network resilience

The InfoSec Handbook

Computer scienc

Semantic Ontology Design for a Multi-Cooperative First Responder Interoperable Platform

Natural and man-made catastrophic events appear be steadily increasing in intensity and frequency. Proper preparation, response and recovery are essential if mankind and its vital systems are to cope with and survive large-scale disasters. The organisations responsible for delivering emergency response services often under-perform due to a lack of proper interoperation and collaboration. This paper discuss the interoperability issues for data interchange among first responders agency participating in emergency situation and provides exhaustive overview of the recent studies and attempts to solve the problem. The approach taken by the EU funded REDIRNET project for development of a core ontology enabling exchange of data among first responder agencies is presented. The novelty included in the ontology tree is described and the implementation in the meta-data gateway is introduced. The paper provides insight in the implementation of the REDIRNET platform and the designed semantic interoperable services. The paper ends with the discussion of the presented work and the concluding remarks

On Issues, Strategies and Solutions for Computer Security and Disaster Recovery in Online Start-ups

Vast majority of entrepreneurial ventures want an online and offline business model. Quite a good number would prefer their dealings occur strictly online. However, very few know what it takes to aim at achieving 99.999% availability, this is a key goal in deploying Computer and information technology (IT) solutions. In this present world of Information Technology there is an increase in threats faced by small medium businesses and enterprise on online platforms. More companies are vulnerable to attacks/threat such as DDOS, Malwares, Viruses, Ransomware etc. Entrepreneurial venture’s adoption of IT solutions with security in view, in addition to a disaster avoidance, mitigation and recovery plan or strategy can help in this respect. This paper suggests such issues to be considered and strategies to adopt in IT security and avoiding disaster and solutions to remedy disaster

Applying a Layered Framework to Disaster Recovery

Building highly available information technology (IT) infrastructures has become critical to many corporations’ survival. However, the disaster recovery (DR) industry lacks a common enterprise framework to capitalize on the value that DR provides corporations due in part to inadequate conceptual frameworks for DR that can facilitate the alignment of corporate efforts toward corporate resiliency. To address this problem, we propose a new conceptualization for the DR of enterprise architecture. This conceptual framework comprises DR layers that describe the nature of DR and its related components from a functional and technical point of view. We discuss the benefits of these DR layers to DR teams and compare our approach to traditional thinking. Further, we present a case study, its findings, and their implications for DR. As a result, we demonstrate how our layered framework of enterprise architecture provides a unified understanding of the DR practice, which one can then use to support decision making and corporate alignment of the DR practice and its associated technology