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

Network jamming – DOS/DDOS wireless network attacks

The most common way of jamming a wireless network is by sending a continuous series of deauthentication packets, which will disconnect clients from the AP and also prohibit clients from connecting back to the AP. This attack is also helpful during honeypot attacks.

Another approach could be to send disassociation packets. The difference between these two management frames is that the deauthentication packet will inform the attacker that the user is disconnected from the network. However, the disassociation packet will disconnect any node that is connected to the AP while the AP is down or rebooting.

So, to perform this, we will be using aireplay-ng, as shown in the following screenshot:

Figure 11.31 – Deauthentication attack

Now that we have seen network jamming attacks using deauthentication or disassociation attacks, let's move forward with an advanced topic, honeypots...