Principles And Practices Of Network Security
Download Principles And Practices Of Network Security PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Principles And Practices Of Network Security book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages.
PRINCIPLES AND PRACTICES OF NETWORK SECURITY
Author: Dr. Ihtiram Raza Khan
language: en
Publisher: Xoffencerpublication
Release Date: 2023-05-03
In order to provide protection against DoS assaults, the security system interfaces with the AODV routing protocol using techniques based on Route Request (RREQ). It employs not one but two different kinds of techniques. When an inside hostile node launches a DoS attack by flooding the network with RREQs, this strategy may be used to minimise the impacts of the assault in pure AODV routing protocol. In this scenario, the DoS attack is carried out by flooding the network with RREQs. The node in the centre of the network both observes and participates in the conversation that is taking place between the evil node, the sender node, and the recipient node. One of the intermediate nodes on the ideal route, which has a total of four nodes, is comprised of the malicious node and three of its neighbours. This makes up one of the nodes on the ideal path. The malicious node inundates the network with traffic by continuously submitting 10 RREQ queries at each and every second. Due to the fact that its close neighbours are aware of the RREQ_RATELIMIT, each of them will only transmit a maximum of 10 RREQs to it at any one time. Due to the fact that these nodes are only able to receive a maximum of three RREQs from their neighbours in a single second, the neighbours of these nodes are required to transmit a total of seven RREQs. In addition, the RREQs of a total of four must be sent by the neighbours of the nodes in question. Because the resources of the malicious node's neighbours are totally occupied in processing and forwarding the RREQ's that originate from it, the path that connects the blue nodes, if it is formed at all, will consist of a greater number of intermediate nodes. This is because the malicious node is the source of the RREQ's that are being processed and forwarded by its neighbours. This is due to the fact that the RREQs that come from the malicious node have an effect on the nodes that are neighbouring it. As a direct result of this, a denial of service attack is carried out since the legitimate nodes are disconnected from the services offered by other nodes, whose resources are being wasted as a direct result of the flooding. During the phase of the AODV scheme's operation in which two legitimate nodes are attempting to communicate with one another, a malicious node will bombard the network with RREQs in order to disrupt the process. According to this strategy, there is a maximum number of RREQs that may be obtained from a single neighbour, and that number is capped at that amount. As a consequence of this, the neighbours of the malicious node will only accept and transmit three RREQ packets received from it during a period of one second.
Network Security Principles and Practices
Expert solutions for securing network infrastructures and VPNs bull; Build security into the network by defining zones, implementing secure routing protocol designs, and building safe LAN switching environments Understand the inner workings of the Cisco PIX Firewall and analyze in-depth Cisco PIX Firewall and Cisco IOS Firewall features and concepts Understand what VPNs are and how they are implemented with protocols such as GRE, L2TP, and IPSec Gain a packet-level understanding of the IPSec suite of protocols, its associated encryption and hashing functions, and authentication techniques Learn how network attacks can be categorized and how the Cisco IDS is designed and can be set upto protect against them Control network access by learning how AAA fits into the Cisco security model and by implementing RADIUS and TACACS+ protocols Provision service provider security using ACLs, NBAR, and CAR to identify and control attacks Identify and resolve common implementation failures by evaluating real-world troubleshooting scenarios As organizations increase their dependence on networks for core business processes and increase access to remote sites and mobile workers via virtual private networks (VPNs), network security becomes more and more critical. In today's networked era, information is an organization's most valuable resource. Lack of customer, partner, and employee access to e-commerce and data servers can impact both revenue and productivity. Even so, most networks do not have the proper degree of security. Network Security Principles and Practices provides an in-depth understanding of the policies, products, and expertise that brings organization to this extremely complex topic and boosts your confidence in the performance and integrity of your network systems and services. Written by a CCIE engineer who participated in the development of the CCIE Security exams, Network Security Principles and Practices is the first book that provides a comprehensive review of topics important to achieving CCIE Security certification. Network Security Principles and Practices is a comprehensive guide to network security threats and the policies and tools developed specifically to combat those threats. Taking a practical, applied approach to building security into networks, the book shows you how to build secure network architectures from the ground up. Security aspects of routing protocols, Layer 2 threats, and switch security features are all analyzed. A comprehensive treatment of VPNs and IPSec is presented in extensive packet-by-packet detail. The book takes a behind-the-scenes look at how the Cisco PIX(r) Firewall actually works, presenting many difficult-to-understand and new Cisco PIX Firewall and Cisco IOSreg; Firewall concepts. The book launches into a discussion of intrusion detection systems (IDS) by analyzing and breaking down modern-day network attacks, describing how an IDS deals with those threats in general, and elaborating on the Cisco implementation of IDS. The book also discusses AAA, RADIUS, and TACACS+ and their usage with some of the newer security implementations such as VPNs and proxy authentication. A complete section devoted to service provider techniques for enhancing customer security and providing support in the event of an attack is also included. Finally, the book concludes with a section dedicated to discussing tried-and-tested troubleshooting tools and techniques that are not only invaluable to candidates working toward their CCIE Security lab exam but also to the security network administrator running the operations of a network on a daily basis.
Cryptography and Network Security
For courses in Cryptography, Computer Security, and Network Security The Principles and Practice of Cryptography and Network Security Stallings' Cryptography and Network Security, Seventh Edition, introduces students to the compelling and evolving field of cryptography and network security. In an age of viruses and hackers, electronic eavesdropping, and electronic fraud on a global scale, security is paramount. The purpose of this book is to provide a practical survey of both the principles and practice of cryptography and network security. In the first part of the book, the basic issues to be addressed by a network security capability are explored by providing a tutorial and survey of cryptography and network security technology. The latter part of the book deals with the practice of network security: practical applications that have been implemented and are in use to provide network security. The Seventh Edition streamlines subject matter with new and updated material - including Sage, one of the most important features of the book. Sage is an open-source, multiplatform, freeware package that implements a very powerful, flexible, and easily learned mathematics and computer algebra system. It provides hands-on experience with cryptographic algorithms and supporting homework assignments. With Sage, students learn a powerful tool that can be used for virtually any mathematical application. The book also provides an unparalleled degree of support for instructors and students to ensure a successful teaching and learning experience.