Using Computing Services And Resources

Virtualization is a combination of software and hardware engineering that creates Virtual Machines (VMs) - an abstraction of the computer hardware that allows a single machine to act as if it were many machines, or a computer that does not physically exist as a piece of hardware. The hardware that is seen by the operating system is emulated in an effort to separate the physical hardware from operating system. This allows the virtual machine to be moved and hosted on any machine independent of hardware. Virtualization technology is possibly the single most important issue in IT and has started a top to bottom overhaul of the computing industry which is why many companies around the world have are using its softwares to enhance their business opportunities.

In this book, trust is defined as “one’s willingness to be vulnerable to another based on the confidence that the other is benevolent, honest, open, reliable, and competent.” (page xiii) The author recognizes that trust is complex and dynamic. She views trust as the “lubricant” that greases the machinery of the organization. Trust is particularly important where parties are interdependent, or the “interests of one party cannot be achieve without reliance upon another.” In schools “teachers and principals are

Instead of having one physical piece of hardware that could fail, setup virtualization with redundancy. Virtualization platforms today have the ability to shift

Virtual Machine Security - Full Virtualization and Para Virtualization are two kinds of virtualization in a cloud computing paradigm. In full virtualization, entire hardware architecture is replicated virtually. However, in para virtualization, an operating system is modified so that it can be run concurrently with other operating systems. VMM Instance Isolation ensures that different instances running on the same physical machine are isolated from each other. However, current VMMs do not offer perfect isolation. Many bugs have been found in all popular VMMs that allow escaping from VM (Virtual machine). Vulnerabilities have been found in all virtualization software, which can be exploited by malicious users to bypass certain security restrictions or/and gain escalated privileges. ation software running on or being developed for cloud computing platforms presents different security challenges. It is depending on the delivery model of that particular platform. Flexibility, openness and public availability of cloud infrastructure are threats for application security. The existing vulnerabilities like Presence of trap doors, overflow problems, poor quality code etc. are threats for various attacks. Multi-tenant environment of cloud platforms, the lack of direct control over the environment, and access to data by the cloud platform vendor; are the key issues for using a cloud application. Preserving integrity of applications being executed in remote machines is an open

[P3] Server virtualisation: This is the process of hiding all of the server resources including the amount of servers that a company has and the amount of processors etc. From the people using the server.

Computer systems evolve over time in response to new requirements, businesses rarely have a blank slate to work with – so compromises and security gaps will develop, it is almost guaranteed.

VMware’s core competencies are self-service; encapsulation and isolation between applications; rock solid data protection; simple and easy. The challenge for enterprise IT will be to meet these expectations in the corporate environment while maintaining corporate policy, delivering on SLAs and flexible delivery at low cost. And to do so at the appropriate user and application granularity, all the while bridging to the world of Windows applications and desktops. The challenge for enterprise IT will be to meet these expectations in the corporate environment while maintaining corporate policy, delivering on SLAs and flexible delivery at low cost. And to do so at the appropriate user and application granularity, all the while bridging to the world of Windows applications and desktops.

When installing any operating system regardless of whether it is a Linux or windows based operating system it is essential that steps are taken to ensure the security of the operating systems. Ensuring the security of an installed operating system before for it is put into use is known as system hardening. System hardening is done by taking known vulnerabilities in an operating system and making security enhancement to mitigate these vulnerabilities. Thus, it is important to know the vulnerabilities which are posed by each operating system and the ways in which they can be mitigate. Below are three common vulnerabilities in windows operating system and recommendations on how to mitigate them.

Outsourcing is that a product or service provided by outside vendors which but was previously provided internally or that could be provided internally(Pearlson, 2001).It is an effective approach for information system implement in a business organization but a risky one.

Network Based Virtualization is abstract storage of data applications from the host machine. This is well achieved through fibre channels connection between the machines and the servers running virtualization. The respective operating systems on the separate machines are not a factor to consider as they work independently. For it to achieve its expectations, the following services must be provided as below:

Hypervisor is the virtualization layer which is responsible for the virtualization. a virtualization platform that allows multiple virtual machines to run on a physical host at the same time

These virtual machines have a separate operating system, memory, processor and other resources which is the shared by the resources of the

Cloud technologies revolve heavily around virtual machines that reside on physical servers (Talbot, 2009). One physical server could be the home of a slew of virtual machines; should an attacker interrupt the normal operations of a physical server it could result in the inoperability of the virtual machines also. One of the techniques can be used is an attacker implanting a virtual machine on a physical server (Talbot, 2009). Once the

Outsourcing refers to hiring an outside, independent firm to perform a business function that internal employees might otherwise perform. Many organizations outsource jobs to specialized service companies, which frequently operate abroad. The outsourcing trend stands to continue; the latest wave of outsourcing impacts the information technology field. IT outsourcing includes data center operations, desktop and help desk support, software development, e-commerce outsourcing, software applications services, network operations and disaster recovery.2

Trust in people is merely a relationship of reliance and an intrinsic part of human nature. It is established at the family level and expands outward as the child matures. Each being depends on their families to provide as one depends on educators to teach. Furthermore, trust is necessary for institutions such as schools, hospitals, businesses, and even the government to effectively operate. The workforce expects their employers to give a cash-able paycheck in return for their hard worked hours; consumers give a business compensation on the basis of receiving a product or service in return; and individuals put their