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

DNS Security

In the previous chapter, we learned about various routing protocols, network traffic flow, and common attacks. This chapter talks about a different but very interesting and important network protocol – the Domain Name System (DNS), a very familar term for Information Technology (IT) teams, as they deal with common DNS problems in their day-to-day lives.

DNS technology arose in the early 80s when it was very difficult for users to remember Internet Protocol (IP) addresses. Back then, domain names mapping against each IP address were added to a hosts file, but it was very difficult to maintain every entry in this as it got larger day by day. Hence, a centralized dynamic approach was discovered called DNS, which we are going to learn about in this chapter.

This chapter starts with an explanation of the DNS protocol, how DNS works, various loopholes, and countermeasures that can be implemented to secure the DNS protocol from various attacks.

In this chapter...