Introduction to Network Security , Attacks and Services

In this paper the flaws in the network security and its impact on people have been discussed. The paper also covers a brief perspective of the threats faced in a computer network and some tools that can be used to reduce the exposure to the risks of network computing have also been discussed.

Network Security is the most vital component in information security because it is responsible for securing all information passed through networked computers. Network Security refers to all hardware and software functions, characteristics, features, operational procedures, accountability, measures, access control, and administrative and management policy required to provide an acceptable level of protection for Hardware and Software , and information in a network. The internet structure itself allowed for many security threats to occur. The architecture of the internet, when modified can reduce the possible attacks that can be sent across the network. Knowing the attack methods, allows for the appropriate security to emerge. Many businesses secure themselves from the internet by means of firewalls and encryption mechanisms. The businesses create an “intranet” to remain connected to the internet but secured from possible threats.

Indian Journal of Science and Technology, 2016

With the advancement in technology we are having everything available on a single click. Instead of wasting a lot of time while standing in a queue for a task to be done now we just have to open our device and connect it to the internet and the task completes in few minutes. This all is possible due to the availability of network. On one side where we are saving the time on the other side we are exposing our secret information to a third party which may misuse it. It is because the structure of internet itself allowed many security problems to occur. We can modify the architecture of internet to reduce the possibility of attack on data. If we talk about various business organizations they keep themselves protected from threats by connecting there self to intranet instead of internet. The Network Security can be simple or complex depending upon the requirements. In order to understand the present scenario of research in this field we must first understand its importance, history and various technologies which can be used to provide security measures. Keywords— Network Security, Security Importance, History of security, Attack Methods, Vulnerable aspects.

2011

With the rapid increase of technology throughout the world, there has also been an equally rapid increases in its abuse. Currently, security professional made some attempts to learn about attacker, however these attempts were limited in effort and scope. They emphasis on the targeted vulnerability and how the exploit took advantage of that vulnerability. However, very little attention was focused on the attackers themselves. IT is necessary to study the black-hat community's tools, tactics, and motive and then sharing any lessons learned. The more you know about your enemies, the better chance you have of defending yourself against them and defeating them. A honeynet is a network set up with intentional vulnerabilities; its purpose is to invite attack, so that an attacker's activities and methods can be studied and that information used to increase network security. This paper will collect and analyse the attackers activity, through the honeynet network and normal secured system and it will identify if there is new attackers activities, that are not detected by the current security tool are detected. First, I thank Ismail Hassan, for his continuous support and inspiration in the process of this thesis. I am also greatly indebted to my past instructors at Oslo University College for your motivation and helping me interested in Network and System Administration field of study. I also would like to thank Oslo University and Oslo University College for providing me this educational opportunity. I especially acknowledge and thank my love and my wife Mignote Gebrehiwot who has been supporting me in all aspects. Without her support I could not reach where I want to be. Last, but not least, a special thanks to our new born son, Aron who has brought happiness in our family.

Computer Engineering and Intelligent Systems, 2023

In today's highly interconnected world, network security has become a critical aspect of protecting organizations from cyber-attacks. The increasing sophistication of attackers and their ability to exploit software and firmware vulnerabilities pose significant dangers to the security of networks. However, many organizations often neglect the essential steps required to secure their networks, leading to an increased risk of security breaches. In this research article, we aim to address this issue by investigating network security concepts, potential dangers, and practical defense strategies. We begin by exploring the different types of cyber-attacks and their sources, highlighting the various ways attackers exploit network vulnerabilities. We also examine the reasons why organizations often overlook network security and the consequences of not prioritizing it. To better understand the complexity of network security, we categorize the different security concerns using the CIA (confidentiality, integrity, and availability) triangle. This approach allows us to identify the various areas of vulnerability and their potential impact on network security. Next, we focus on the most crucial basic concepts and steps involved in various network security operations. We outline the best practices and practical approaches organizations can take to improve their network security, including implementing security policies and procedures, using encryption and authentication methods, and conducting regular security assessments. By highlighting the importance of network security and providing practical guidance on how organizations can defend against cyber-attacks, we hope to raise awareness and help prevent security breaches.

In addition to the advancement of the web, safety, as well as protection, came to be significant stress. Additionally, the background of security allows a much better understanding of the look of safety advancement. The net structure, on its own, enabled lots of safety threats to happen. The type of the world wide web, when regulated, can easily decrease the practical assaults that could be delivered throughout the network. Recognizing the strike techniques permits appropriate surveillance to surface. Many companies protect on their own, coming from the internet using firewalls in addition to the shield of encryption devices. Businesses make an "intranet" to keep connected to the internet but gotten from possible threats. This paper briefly discussed about the security threats, security vulnerabilities and advance network security policies.

Systems Science & Control Engineering, 2014

Network security is a specialized field consisting of the provisions and policies to prevent and monitor unauthorized access, misuse, modification, or denial of a computer network and network-accessible resources as well as ensuring their availability through proper procedures. Many security devices are being developed and deployed to defend against cyber threats and to prevent unintended data breaches. In spite of all these efforts, the 'golden age' of cyber crime continues, as organizations around the world continue to suffer data breaches and security attacks. What kinds of threats we are facing today? How these threats are to be dealt with? The goal of this paper is to communicate an updated perspective of network security for organizations, and researchers in the field and present some recommendations to tackle the current situation of security threats.

2024

Technology's rapid growth and greater reliance on digital systems have made cybersecurity a global problem for organizations. ACME Industries, a worldwide financial security corporation, follows suit. We analyze ACME Industries' IT infrastructure and make security suggestions in this study. The paper begins with a cybersecurity risk analysis that covers risk analysis standards and frameworks, valuable assets and their impact values, and threats and vulnerabilities. This study enables secure security architecture design. A DMZ server farm would secure central server files. This includes directory, DHCP, file, proxy, management, email, DB, SIEM, and web servers. DMZs keep vital servers safe. We also secure OS and networked systems. To secure network traffic, VLANs are used. VLANs isolate and govern network resources for departments, guests, Wi-Fi users, PC users, and IP phones. We cover network assaults and vulnerabilities using SIEM. Real-time security analytics can detect and respond to attacks. ACME Industries can increase network security and threat detection using SIEM data. Planning and execution are needed to change the network architecture. We describe a smooth switching mechanism. We also present industry best practices and cybersecurity principles-based research and reasons for the recommended solutions. This cybersecurity analysis study is designed to help ACME Industries understand its IT infrastructure security landscape and improve company cybersecurity. ACME Industries can reduce risks, protect sensitive data, and maintain system and data integrity by following security recommendations and industry standards

Network Security, 2007

The purpose of this chapter is to introduce some basic network security terms and lead the reader through the rest of the book. It provides a baseline level of knowledge in the areas of information technology (IT) security and network security for those readers who are unfamiliar with these concepts. It also provides a set of common terms and defi nitions which will help those readers who already have some basic knowledge in network security to have a common understanding of the chapters that follow. However, advanced readers with a good background in networking and IT security may skip this chapter and proceed to the more specifi c areas covered in this book.

International Journal of Scientific Research in Computer Science, Engineering and Information Technology, 2020

With the occurrence of the World Wide Web and the emergence of ecommerce applications and social networks, organizations across the world generate a large amount of data daily. Information security is the most extreme basic issue in guaranteeing safe transmission of data through the web. Also network security issues are now becoming important as society is moving towards digital information age. As more and more users connect to the internet it attracts a lot of cyber-attacks. It required to protect computer and network security i.e. the critical issues. The pernicious hubs make an issue in the system. It can utilize the assets of different hubs and safe guard the assets of its own. In this paper we provide an overview on Network Security and various techniques through which Network Security can be enhanced i.e. Cryptography. Cryptography and Network Security is used to protect network and data transmission takes place over wireless network.

— Network security is a complicated subject, historically only tackled by well-trained and experienced experts. However, as more and more people becomè`wired'', an increasing number of people need to understand the basics of security in a networked world. This document was written with the basic computer user and information systems manager in mind, explaining the concepts needed to read through the hype in the marketplace and understand risks and how to deal with them. Some history of networking is included, as well as an introduction to TCP/IP and internetworking. We go on to consider risk management, network threats, firewalls, and more special-purpose secure networking devices. This is not intended to be a ``frequently asked questions'' reference, nor is it a ``hands-on'' document describing how to accomplish specific functionality. It is hoped that the reader will have a wider perspective on security in general, and better understand how to reduce and manage risk personally, at home, and in the workplace.

With the invention of the internet and new networking technologies, the world has become more interconnected. The concept of network securities is becoming more eminent due to easily acquirable intellectual properties. Network security covers an assortment of computer networks, both public and private, that are utilized as a part of ordinary activity directing exchanges and interchanges among organizations, government offices and people. In this research, discussion paper on the concept of network security as well as various types of network securities is done.

The availability of information and communication technologies (ICTs) and network-based services offer a number of advantages in today's society, for example e-government, e-commerce, e-education etc. These ICTs and networks are used for storage and transmission of highly sensitive data which is a subject of interest to both authorized and unauthorized users. Hence security is necessary to ensure only authorized users get access to this data. Technological, configuration and policy vulnerabilities are experienced due to the rapid development and complexity of these networks, evolving technology and usage patterns, and changing hacking tactics. Despite the existence of various security mechanisms to secure the networked environments, unauthorized users still find their way into networked environments by exploiting vulnerabilities in networked environments causing serious damages and data loss. This paper performs a review of various networked environments, vulnerabilities, security controls and models with an objective of finding their gaps and suggests taking vulnerability management approach to secure networked environments.

2010

In recent years, so many networks are being built and some of the organizations are able to provide security to their networks. The performance of a network depends on the amount of security implemented on the network without compromising the network capabilities. For building a secure network, administrators should know all the possible attacks and their mitigation techniques and should perform risk analysis to find the risks involved in designing the network. And they must also know how to design security policies for implement the network and to educate the employees, to protect the organization's information. The goal behind this case-study is to build a campus network which can sustain from reconnaissance attacks. This thesis describes all the network attacks and explores their mitigation techniques. This will help an administrator to be prepared for the coming attacks. This thesis explains how to perform risk analysis and the two different ways to perform risk analysis. It also describes the importance of security policies and how security policies are designed in real world.