Network Security Fundamentals Concepts Technologies And Best Practices
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NETWORK SECURITY FUNDAMENTALS: CONCEPTS, TECHNOLOGIES, AND BEST PRACTICES
The phrase "network security" refers to the measures and processes that are carried out in order to secure computer networks and the resources that are associated with them against unauthorized access, misapplication, modification, or interruption. This may be done by preventing unauthorized users from accessing the network, misusing the network's resources, or interrupting the network's operation. It is of the highest importance to preserve the security of these networks in a world that is getting more and more integrated, where information is routinely traded and transmitted across a variety of different networks. A secure environment that safeguards the availability, integrity, and confidentiality of data and network resources is the primary goal of network security. This purpose requires that a secure environment be provided. This is achieved by ensuring that these assets are not accessible to unauthorized parties. The protection of confidentiality ensures that sensitive information may only be accessed and read by those individuals who have been specifically granted permission to do so. The reliability of the data will not be compromised in any way, and it will maintain its integrity even while being sent and stored. This is what is meant by "data integrity." When it comes to a network, having high availability ensures that all of its services and resources may be accessible by authorized users whenever it is necessary for them to do so. The safeguarding of a computer network calls for a combination of hardware, software, and operational controls to be implemented. These protections protect the network against a wide range of attacks, including those listed below:
NETWORK SECURITY FUNDAMENTALS: CONCEPTS, TECHNOLOGIES, AND BEST PRACTICES
In order to have a complete understanding of the function that ISA Server plays in network security, it is necessary to first have a broad understanding of what network and Internet security entails, why it is vital, and how it may be achieved by means of an all-encompassing security policy. Only then will you be able to understand how firewalls work and how functions. After that, you will be able to comprehend the operation of ISA in addition to the workings of firewalls. Within the realm of information technology (IT), network security is a pressing problem that is also rapidly becoming into a prominent (and often lucrative) area of specialized knowledge and experience. Users of the internet who are technically savvy frequent in large numbers websites that place a strong emphasis on data protection. There has been a rise in the frequency with which certifications that are concerned with security are adopted. Biometric identification and verification used to be the realm of science fiction writers and maybe a few highly secret government agencies, but in today's day and age, such arcane security measures are considered to be standard operating procedure in corporate America. In spite of all of the attention that is being given to security, many firms continue to install security measures in a way that is almost wholly random. There is no system that has been well-thought-out to ensure that all of the components are compatible with one another, and this is a problem. Only two of the numerous sides that are covered in computer security are the protection of the physical hardware as well as the electrical bits and bytes that make up the information that is stored on the network. Computer security also includes the protection of many other aspects. In the following sentence, we will provide a high-level overview of what we mean when we speak about "security" and how it pertains to your computer network. This will be followed by a review of some of the key points. This term may be a little misleading when it comes to the safety of computers and networks since it indicates a degree of protection that is essentially unreachable in the connectivity-oriented computing world of today. Because of this, the same dictionary 1 | P a ge gives yet another meaning that is unique to computer science. This definition is as follows: "The degree to which a program or device is protected from being used in an unauthorized manner" [italics added]. This definition contains the unstated stipulation that the aims of security and accessibility, the two primary concerns on the minds of many network managers, are, by their very natures, diametrically opposed to one another. This is an implicit caveat in the definition. The accessibility and protection of users' data are often cited as the two most important concerns of network administrators. Your data will have a lower level of protection if it is easier for unauthorized parties to have access to it. In a same vein, if you guard it with a higher level of vigilance, you will make it harder for anybody to have access to it. Every strategy for achieving security entails some level of work to locate a happy medium between the two poles of the spectrum. You will need to familiarize yourself with the terminology that security professionals use in order to appreciate the fundamentals; similarly, this is the case in any other specialized sector that you may be interested in. At the end of this, you will discover a list of some common phrases that you are likely to come across when working in the subject of information technology security. If you are just starting out in the industry, the information on this list will be useful to you. A well-known hacker's slogan is "Hack the world!" Other well-known hacker slogans are "Information wants to be free" and the simpler but more positive "Information wants to be free." The fact of the issue is, however, that it is relevant not only to those people who are trying to acquire access to material that they are not permitted to examine, but also to those people who are attempting to secure themselves from the trespassers. This is because the reality of the matter is that it is applicable to both groups of people. The old adage "Know thy enemy" is still the first and most crucial stage in winning any fight, and network security is a war over who owns and controls the information on your computer. Therefore, it is essential to have a thorough understanding of your adversary. This piece of wisdom has been passed down from generation to generation since the beginning of time. In order to prevent the theft of network resources, damage to those resources, or exposure of those resources when it is not necessary, you need to have a knowledge of who initiates these actions, why they do it, and how they do it.
Guide to Computer Network Security
Author: Joseph Migga Kizza
language: en
Publisher: Springer Nature
Release Date: 2024-01-19
This timely textbook presents a comprehensive guide to the core topics in computing and information security and assurance realms, going beyond the security of networks to the ubiquitous mobile communications and online social networks that have become part of daily life. In the context of growing human dependence on a digital ecosystem, this book stresses the importance of security awareness—whether in homes, businesses, or public spaces. It also embraces the new and more agile and artificial-intelligence-boosted computing systems models, online social networks, and virtual platforms that are interweaving and fueling growth of an ecosystem of intelligent digital and associated social networks. This fully updated edition features new material on new and developing artificial intelligence models across all computing security systems spheres, blockchain technology, and the metaverse, leading toward security systems virtualizations. Topics and features: Explores the range of risks and vulnerabilities in all connected digital systems Presents exercises of varying levels of difficulty at the end of each chapter, and concludes with a diverse selection of practical projects Describes the fundamentals of traditional computer network security, and common threats to security Discusses the role and challenges of artificial intelligence in advancing the security of computing systems’ algorithms, protocols, and best practices Raises thought-provoking questions regarding legislative, legal, social, technical, and ethical challenges, such as the tension between privacy and security Offers supplementary material for students and instructors at an associated website, including slides, additional projects, and syllabus suggestions This important textbook/reference is an invaluable resource for students of computer science, engineering, and information management, as well as for practitioners working in data- and information-intensive industries. Professor Joseph Migga Kizza is a professor, former Head of the Department of Computer Science and Engineering, and a former Director of the UTC InfoSec Center, at the University of Tennessee at Chattanooga, USA. He also authored the successful Springer textbooks Ethical and Social Issues in the Information Age and Ethical and Secure Computing: A Concise Module.