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 generation and replaying tools

During downtime, especially in a case when any network device goes down in a network infrastructure, network administrators need to understand the root cause of a device’s failure. So, to understand the root cause, the administrators send crafted packets into the network (known as packet replays) to understand the behavior of the devices and failure points.

For example, during some implementations, a server lost a connection with the whole network. Therefore, administrators send Traceroute and ICMP packets to understand the failure. So, the last capture packet was dropped at some firewall in between, which means that during implementation, the network team forgot to open the connection at the firewall.

Hence, packet generation and replaying packets are techniques via which the network team creates and sends the packets, such as TCP, ICMP, UDP, and ARP, in a raw format to the targeted device and capture the response, to learn about...