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

Python/Pyshark for deep network analysis

We have learned about packet analysis using automated tools, but sometimes, during malware analysis, data exfiltration, and tunneling attacks such as DNS tunneling require a packet-by-packet deep analysis, which in Wireshark is a bit complex. Using Python modules such as Pyshark is a useful way to understand and locate malicious targets.

So, let’s perform packet analysis using Pyshark. Installation of Pyshark is very easy, as shown in the following screenshot:

Figure 8.12 – Pyshark installation

As shown in Figure 8.12, Pyshark has been successfully installed in Windows as a Python module package. So, let’s import Pyshark and start the live traffic capture:

Figure 8.13 – Pyshark live packets capturing

As shown in Figure 8.13, using pyshark, live packets are successfully captured. So, let’s open the live packet captured in Wireshark to validate:

...