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

Summary

In this chapter, we talked about data networks in order to identify potential risks and vulnerabilities. We discussed the way that networks operate: layers 1 and 2 carry information directly between attached network elements, layers 3 and 4 carry information from end to end, and layers 5 to 7 implement the network applications.

For layers 1 and 2, we discussed Ethernet protocols and how LAN switches work. Additionally, we looked at VLANs that divide the network virtually into different LANs. We discussed the STP, which prevents loops in the network, and we looked at transmission methods – Unicast, Multicast, and Broadcast.

For layer 3, we talked about ARP and IP. Additionally, we looked at routers and routing protocols that enable the forwarding of packets through the network. For layer 4, we talked about connectivity and reliability, and we discussed TCP, UDP, and the relatively new Google QUIC protocol.

Finally, we looked at tunneling and encapsulation and...