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

Layer 2 attacks – how to generate them and how to protect against them

Layer 2 is the layer where the IP fragments from Layer 3 are transferred and are further divided into data frames to fill up the required details such as the MAC address and then transfer those frames to Layer 1, which then carries the data into 10101 format through the connecting wire. In Chapter 1, Data Centers and the Enterprise Network Architecture and its Components, in the Layer 2 protocols: STP, VLANs, and security methods section, we talked about how a LAN works, and we mentioned the types of attacks that can be performed. Dividing these attacks into categories, we talked about the following:

  • Attacks on the switching and discovery mechanism
  • Attacks on the Virtual LAN (VLAN) mechanism and VLAN flooding
  • Broadcast storms and attacks on the spanning tree protocols and loop-prevention mechanisms

Let's see how to generate and protect against these attacks.

Attacks on the switching...