Book Image

Network Protocols for Security Professionals

By : Yoram Orzach, Deepanshu Khanna
5 (1)
Book Image

Network Protocols for Security Professionals

5 (1)
By: Yoram Orzach, Deepanshu Khanna

Overview of this book

With the increased demand for computer systems and the ever-evolving internet, network security now plays an even bigger role in securing IT infrastructures against attacks. Equipped with the knowledge of how to find vulnerabilities and infiltrate organizations through their networks, you’ll be able to think like a hacker and safeguard your organization’s network and networking devices. Network Protocols for Security Professionals will show you how. This comprehensive guide gradually increases in complexity, taking you from the basics to advanced concepts. Starting with the structure of data network protocols, devices, and breaches, you’ll become familiar with attacking tools and scripts that take advantage of these breaches. Once you’ve covered the basics, you’ll learn about attacks that target networks and network devices. Your learning journey will get more exciting as you perform eavesdropping, learn data analysis, and use behavior analysis for network forensics. As you progress, you’ll develop a thorough understanding of network protocols and how to use methods and tools you learned in the previous parts to attack and protect these protocols. By the end of this network security book, you’ll be well versed in network protocol security and security countermeasures to protect network protocols.
Table of Contents (23 chapters)
1
Part 1: Protecting the Network – Technologies, Protocols, Vulnerabilities, and Tools
7
Part 2: Network, Network Devices, and Traffic Analysis-Based Attacks
12
Part 3: Network Protocols – How to Attack and How to Protect

Falsification, overclaiming, and disclaiming

Router falsification is an attack in which an attacker sends fake or false routing information to the network. Once the intermediate connected nodes (routers here) accept the false routing information, such as fake LSAs (in OSPF), routers tend to update their routing tables. These attacks can prove dangerous, as they lead to website phishing, MITM attacks, eavesdropping, and DNS spoofing.

To perform falsification attacks, a few assumptions are required to achieve the target. The primary assumption is that the attacker cannot be a receiver, but they need to be an originator. This means that the attacker’s machine should be capable of originating the false routing information and should be acting as a forwarder of the falsified routing data, rather than just being capable of receiving the information.

A falsification attacker acting as an originator is described as follows:

  • Overclaiming – An overclaiming attack...