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

Evil twin attack – honeypots

An evil twin attack is a very common attack where an attacker creates a rogue AP with the same ESSID and the same or different BSSID (depending on the security architecture of the victim's organization) to lure victims into thinking the attacker's AP is legitimate. The attacker does this by amplifying the rogue AP signals in such a manner that the victim's machines automatically connect to the fake AP.

The whole idea behind creating a fake AP is very simple but depends on the organization's implementation of the target SSID as well. Take the following examples:

  • If the target SSID is configured with open authentication but with a captive portal, then the attacker will create a fake web page, connect that with a database, and once the victim starts putting credentials in that web page, the attacker from the backend, after capturing the credentials, will provide victims with internet access and the victim will think of...