Web browsers ostensibly provide strong isolation for the client-side components of web applications. Unfortunately, this isolation is weak in practice; as browsers add increasingly rich APIs to please developers, these complex interfaces bloat the trusted computing base and erode cross-app isolation boundaries. We reenvision the web interface based on the notion of a pico-datacenter, the client...

More often than not, a “cloud” refers to an “Infrastructure-as-a-Service” (IaaS) cloud, such as Amazon EC2, where IT infrastructure is deployed in a cloud provider’s datacenter in the form of virtual machines. With the growing popularity of IaaS clouds, an ecosystem of tools and technologies is emerging that can transform an organization’s existing infrastructure into a private cloud or a hybri...

Cloud computing allows pharmacometricians to access advanced hardware, network, and security resources available to expedite analysis and reporting. Cloud-based computing environments are available at a fraction of the time and effort when compared to traditional local datacenter-based solutions. This tutorial explains how to get started with building your own personal cloud computer cluster us...

According to current usage patterns, research trends, and latest reports, the performance of the wide-area networks interconnecting geographically distributed cloud nodes (i.e. inter-datacenter networks) is gaining more and more interest. In this paper we leverage only active approaches—thus we do not rely on information restricted to providers—and propose a deep analysis of these infrastructur...

The article describes methods for dealing with reliability and fault tolerance issues of cloud datacenters. These methods are mainly focused on the elimination of single point of failure within any component of the cloud infrastructure, including the availability of infrastructure and accessibility of cloud services. The methods for providing the availability of hardware, software and network c...

Computational clouds have evolved to go beyond cost-effective on-demand hosting of IT resources and elasticity. The added features now include the ability to offer entire IT systems as a service that can quickly adapt to changing business environments. The new trend introduces challenges in datacenter resource management, including scalability, system-orientation, and optimization supporting bo...

Distributed Denial of Service (DDoS) is a major threat to server availability. The attackers hide from view by impersonating their IP addresses as the legitimate users. This Spoofed IP helps the attacker to pass through the authentication phase and to launch the attack. Surviving spoof detection techniques could not resolve different styles of attacks. Packet Resonance Strategy (PRS) armed to d...

The era of cloud computing is driving deployments of dense, high bandwidth, high port count network devices whose energy consumption is growing super-linearly. This trend diverges from the objective of power proportional, cloud-scale datacenter and enterprise networks, and implies a looming network power wall that will require re-thinking the design and configuration of networks and network sys...

A cloud consists of several elements such as clients, datacenter and distributed servers. Scheduling is a critical problem in Cloud computing, because a cloud provider has to serve many users in Cloud computing system. So scheduling is the major issue in establishing Cloud computing systems. The main goal of scheduling is to maximize the resource utilization i.e. energy consumption, power manag...