Survey on Security Issues in Cloud Computing and Associated Mitigation Techniques

Cloud Computing holds the potential to eliminate the requirements for setting up of high-cost computing infrastructure for IT-based solutions and services that the industry uses. It promises to provide a flexible IT architecture, accessible through internet for lightweight portable devices. This would allow multi-fold increase in the capacity or capabilities of the existing and new software. In a cloud computing environment, the entire data reside over a set of networked resources, enabling the data to be accessed through virtual machines. Since these data-centers may lie in any corner of the world beyond the reach and control of users, there are multifarious security and privacy challenges that need to be understood and taken care of. Also, one can never deny the possibility of a server breakdown that has been witnessed, rather quite often in the recent times. There are various issues that need to be dealt with respect to security and privacy in a cloud computing scenario. This extensive survey paper aims to elaborate and analyze the numerous unresolved issues threatening the cloud computing adoption and diffusion affecting the various stake-holders linked to it.Comment: 20 pages, 2 Figures, 1 Table. arXiv admin note: substantial text overlap with arXiv:1109.538

Efficiency and Sustainability of the Distributed Renewable Hybrid Power Systems Based on the Energy Internet, Blockchain Technology and Smart Contracts-Volume II

The climate changes that are becoming visible today are a challenge for the global research community. In this context, renewable energy sources, fuel cell systems, and other energy generating sources must be optimally combined and connected to the grid system using advanced energy transaction methods. As this reprint presents the latest solutions in the implementation of fuel cell and renewable energy in mobile and stationary applications, such as hybrid and microgrid power systems based on the Energy Internet, Blockchain technology, and smart contracts, we hope that they will be of interest to readers working in the related fields mentioned above

Gestion de la sécurité des réseaux à l'aide d'un service innovant de Cloud Based Firewall

Cloud computing has evolved over the last decade from a simple storage service for more complex services, offering the software as a service (SaaS) platforms as a service (PaaS) and most recently the security as a service (SECaaS). In our work, we started with the simple idea to use the resources offered by the Cloud with a low financial cost to propose new architectures of security service. The security of virtual environments is a major issue for the deployment of the use of the Cloud. Unfortunately, these environments are composed of a set of already existing technologies used in a new way, many security solutions are only traditional reconditioned solutions to solve the Cloud and virtual networks security issues. The work done in this thesis is a response to the resource limitations of physical security devices such as firewalls and propose new security architectures consist of management of network security in the cloud-based services following Security as a Service model and propose novel architectures for managing these services. We took the initiative to propose a completely Cloud-Based architecture. The latter allows a cloud provider to provide firewalling service to its customers. It asks them to subscribe to the offer by guaranteeing treatment (analysis) with a capacity of bandwidth traffic with functional filtering rules and other proposed by the subscriber. The results demonstrated the ability of our architecture to manage and cope with network DDoS attacks and to increase analytical capacity by distributing traffic over multiple virtualLe Cloud Computing a évolué au cours de la dernière décennie, passant d’un simple service de stockage à des services plus complexes, en proposant le software comme service (SaaS), les plateformes comme service(PaaS) et très récemment la sécurité comme service (SECaaS).Dans notre travail, nous sommes partis de l'idée simple d'utiliser les ressources offertes par le Cloud avec un faible coût financier pour proposer des nouvelles architectures de service de sécurité.La sécurité des environnements virtuels est un sujet majeur pour le déploiement de l’usage du Cloud. Malheureusement, comme ces environnements sont composés d’un ensemble de technologies déjà existantes, utilisées d'une manière nouvelle, de nombreuses solutions sécuritaires ne sont que des solutions traditionnelles reconditionnées à la problématique Cloud et réseaux virtuels.Le travail effectué dans le cadre de cette thèse vient répondre à la limitation de ressources des équipements physiques de sécurité comme les Firewalls et a pour objectif de proposer de nouveaux services de sécurité composés d’architectures de gestion de la sécurité des réseaux dans le Cloud basé sur le modèle Security as a Service, ainsi que des architectures de management de ces services.Nous avons pris l’initiative de proposer une architecture totalement Cloud-Based. Cette dernière, permet à un Cloud provider de proposer un service de Firewalling à ses clients. Celui-ci leur demande de s’abonner à l’offre en leur garantissant le traitement (analyse) d’une capacité de bande-passante de trafic avec des règles de filtrages fonctionnelles et d’autres proposées par l’abonné.Les résultats obtenus ont démontré les aptitudes de nos architectures à gérer et à faire face à des attaques réseaux de type DDoS et à augmenter la capacité d’analyse en distribuant le trafic sur plusieurs pare-feu virtuels