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

Packet analysis tools – Wireshark, TCPdump, and others

As we all know that at Open Source Interconnection (OSI) layer-3, which is also known as the network layer, the whole communication from one machine to another is in the form of packets. These packets contain the actual information carried over the network channels.

So, the term packet analysis is known as the interception or sniffing of ongoing data to analyze the information, to perform attacks such as a Man in the Middle (MITM) attack, information theft, and forensic analysis. Packet analysis has proved to be very important during red-team operations, especially while bypassing initial network security controls such as Network Access Control (NAC) and performing lateral movements.

The following are some aspects where packet analysis can be very useful:

  • To analyze the issues in a network such as bandwidth choking and communication issues.
  • To identify whether a network is compromised and an attacker is...