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

Common vulnerabilities

With network protocols, we refer to protocols in the OSI Layers 2-7. In the following diagram, you can find a reminder of the OSI reference model and its functionality:

Figure 5.5 – The OSI reference model

These are the details of the OSI reference model:

  • Layer 1, the physical layer, is responsible for the physical connectivity, such as cables, connectors, and frequencies, in wireless and cellular networks.
  • Layer 2, the data link layer, is responsible for the connectivity between directly attached network elements. Ethernet is the main protocol in landline networks.
  • Layer 3, the network layer, is the layer that is responsible for carrying the information from end to end. IP is the only protocol in this layer.
  • Layer 4, the transport layer, is the layer that is responsible for connecting end processes. TCP and UDP are the main protocols in this layer and, in recent years, Quick UDP Internet Connections (QUIC)...