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

IPSec and key management protocols

IPSec is a set of protocols designed to provide Virtual Private Network (VPN) functionality. We will talk about VPNs types and connectivity first before learning about the protocol. IPSec was first standardized in RFC 2401 (IETF, November 1998) and later became obsolete with RFC 4301 (ISTF, December 2005) and has been updated by other RFCs.

IPSec provides the following services:

  • Confidentiality: By encrypting data between the sender and the receiver
  • Integrity: By adding a hash function to the data
  • Authentication: By providing authentication between the two ends
  • Anti-Replay: By sequencing packets that are sent between the two ends

VPNs

A VPN is a way to establish a virtual connection over public infrastructure. Establishing a virtual connection is usually achieved by tunneling, which is a very common mechanism in data communications that encapsulates an internal packet into an external header that will carry it through...