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

Sniffing wireless networks

Sniffing wireless networks is defined as reading the ongoing communication between wireless clients and APs. Sniffing wireless packets helps attackers to perform various attacks, such as MITM. Now, before jumping into the practical demonstrations, let's first understand some basic terminologies and tools that will be helpful here:

  • airmon-ng: A tool in aircrack-ng to set up monitor mode.
  • Monitor mode: Also known as RFMon (Radio Frequency Monitor) mode, this allows the Wireless Network Interface Card (WNIC), or wireless card, for short, to monitor ongoing traffic in the network onto the wireless card.
  • airodump-ng: A tool in aircrack-ng to dump wireless packets.
  • Wireshark: A tool to capture wireless packets.
  • aireplay-ng: A tool to perform deauth, Denial of Service (DOS), and packet injection-related attacks, as well as others.

So, without wasting time, let's sniff some wireless packets or frames:

  1. Turn on the...