Network Security Concepts and Policies Building Blocks of Information Security. In this chapter, you learn about the following topics Fundamental concepts in network security, including identification of common vulnerabilities and threats, and mitigation strategies. Implementation of a security architecture using a lifecycle approach, including the phases of the process, their dependencies, and the importance of a sound security policy. The open nature of the Internet makes it vital for businesses to pay attention to the security of their networks. As companies move more of their business functions to the public network, they need to take precautions to ensure that the data cannot be compromised and that the data is not accessible to anyone who is not authorized to see it. Unauthorized network access by an outside hacker or a disgruntled employee can cause damage or destruction to proprietary data, negatively affect company productivity, and impede the capability to compete. The Computer Security Institute reported in its 2. CSI Computer Crime and Security Survey available at http gocsi. Unauthorized network access can also harm relationships with customers and business partners, who might question the capability of a company to protect its confidential information. Droid-Pentest-Update.jpg' alt='Free Download Program Network Security Hacking Books Collection' title='Free Download Program Network Security Hacking Books Collection' />80 Best Free Hacking Tutorials Resources to Become Pro Hacker 100 Free Hacking Tools To Become Powerful Hacker 5 Best Interview Preparation Books For Software. In this chapter, you learn how to develop a comprehensive network security policy to counter threats against information security. Cracking a wireless network is defeating the security of a wireless localarea network wireless LAN. A commonly used wireless LAN is a WiFi network. Taught by Bastille Linux creator Jay Beale, this handson workshop will teach you to use AppArmor to contain an attack on any program running on the system and to use. Microsoft Professional Program in Data Science. Careers in some of the most indemand technical fields require a new set of skills. We created the Microsoft. XlR4geIlJ3yLiOQ4-F2HPRfCBLUS_7BPoKrIOvoh3I3ZsfRNIIg2YCsMYaAb-7bg=h900' alt='Free Download Program Network Security Hacking Books Collection' title='Free Download Program Network Security Hacking Books Collection' />The definition of data location is being blurred by cloud computing services and other service trends. Individuals and corporations benefit from the elastic deployment of services in the cloud, available at all times from any device, but these dramatic changes in the business services industry exacerbate the risks in protecting data and the entities using it individuals, businesses, governments, and so on. Security policies and architectures require sound principles and a lifecycle approach, including whether the data is in the server farm, mobile on the employees laptop, or stored in the cloud. To start on our network security quest, this chapter examines the need for security, looks at what you are trying to protect, and examines the different trends for attacks and protection and the principles of secure network design. These concepts are important not only for succeeding with the IINS 6. Establishing and maintaining a secure computing environment is increasingly more difficult as networks become increasingly interconnected and data flows ever more freely. C329' alt='Free Download Program Network Security Hacking Books Collection' title='Free Download Program Network Security Hacking Books Collection' />Abusing Windows Management Instrumentation WMI to Build a Persistent Asynchronous and Fileless Backdoor. Imagine a technology that is built into every Windows. Internet running slow I tell you how to speed it up for free. In the commercial world, connectivity is no longer optional, and the possible risks of connectivity do not outweigh the benefits. Therefore, it is very important to enable networks to support security services that provide adequate protection to companies that conduct business in a relatively open environment. This section explains the breadth of assumptions and challenges to establish and maintain a secure network environment. Basic Security Assumptions. Several new assumptions have to be made about computer networks because of their evolution over the years Modern networks are very large, very interconnected, and run both ubiquitous protocols such as IP and proprietary protocols. Therefore, they are often open to access, and a potential attacker can with relative ease attach to, or remotely access, such networks. Widespread IP internetworking increases the probability that more attacks will be carried out over large, heavily interconnected networks, such as the Internet. Computer systems and applications that are attached to these networks are becoming increasingly complex. In terms of security, it becomes more difficult to analyze, secure, and properly test the security of the computer systems and applications it is even more so when virtualization is involved. When these systems and their applications are attached to large networks, the risk to computing dramatically increases. Basic Security Requirements. Naruto Dragon Blade Chronicles Wii ISO on this page. To provide adequate protection of network resources, the procedures and technologies that you deploy need to guarantee three things, sometimes referred to as the CIA triad Confidentiality Providing confidentiality of data guarantees that only authorized users can view sensitive information. Integrity Providing integrity of data guarantees that only authorized users can change sensitive information and provides a way to detect whether data has been tampered with during transmission this might also guarantee the authenticity of data. Availability of systems and data System and data availability provides uninterrupted access by authorized users to important computing resources and data. When designing network security, a designer must be aware of the following The threats possible attacks that could compromise security. The associated risks of the threats that is, how relevant those threats are for a particular systemThe cost to implement the proper security countermeasures for a threat. A cost versus benefit analysis to determine whether it is worthwhile to implement the security countermeasures. Data, Vulnerabilities, and Countermeasures. Although viruses, worms, and hackers monopolize the headlines about information security, risk management is the most important aspect of security architecture for administrators. A less exciting and glamorous area, risk management is based on specific principles and concepts that are related to asset protection and security management. An asset is anything of value to an organization. By knowing which assets you are trying to protect, as well as their value, location, and exposure, you can more effectively determine the time, effort, and money to spend in securing those assets. A vulnerability is a weakness in a system or its design that could be exploited by a threat. Vulnerabilities are sometimes found in the protocols themselves, as in the case of some security weaknesses in TCPIP. Often, the vulnerabilities are in the operating systems and applications. Written security policies might also be a source of vulnerabilities. This is the case when written policies are too lax or are not thorough enough in providing a specific approach or line of conduct to network administrators and users. A threat is any potential danger to assets. A threat is realized when someone or something identifies a specific vulnerability and exploits it, creating exposure. If the vulnerability exists theoretically but has not yet been exploited, the threat is considered latent. The entity that takes advantage of the vulnerability is known as the threat agent or threat vector. A risk is the likelihood that a particular threat using a specific attack will exploit a particular vulnerability of a system that results in an undesirable consequence. Although the roof of the data center might be vulnerable to being penetrated by a falling meteor, for example, the risk is minimal because the likelihood of that threat being realized is negligible. An exploit happens when computer code is developed to take advantage of a vulnerability. For example, suppose that a vulnerability exists in a piece of software, but nobody knows about this vulnerability. Although the vulnerability exists theoretically, there is no exploit yet developed for it. Because there is no exploit, there really is no problem yet. A countermeasure is a safeguard that mitigates a potential risk. A countermeasure mitigates risk either by eliminating or reducing the vulnerability or by reducing the likelihood that a threat agent will be able to exploit the risk. Data Classification. To optimally allocate resources and secure assets, it is essential that some form of data classification exists.