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

IP telephony security and best practices

In my experience, the IP telephony VoIP network is one of the most vulnerable networks as network administrators usually do not put much effort into this subnet or VLAN. Hence, attackers perform lateral movements, especially by compromising the VoIP servers, because usually domain admin credentials are found on these servers. So, securing the IP telephony network is very important and is divided into four major areas, which are as follows:

  • Securing the IP telephony network
  • Securing the IP telephone device
  • Securing the media layer
  • Securing the signaling layer

Securing the IP telephony network

The approach to securing the network is completely based on the architectural level where the network administrators will implement all the security solutions, such as the following:

  • Firewall implementation to allow only the required services over UDP/TCP.
  • SIEM attack monitoring solutions.
  • VLAN segregation between...