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 penetration testing lab setup

The lab setup is the most important part of the activity. For this chapter, we will be setting up the lab with the following components to demonstrate the various vulnerabilities and exploit those vulnerabilities:

  • Trixbox – Trixbox is an open source IP-PBX server that is very easy to configure and supports the latest VoIP signaling protocols, such as SIP2.0, H.323, and so on.

Trixbox supports very little jitter issues while transferring media packets over RTP and is also compatible with almost all softphones and VoIP phones such as Cisco. Please feel free to explore more PBX servers, such as FreePBX, Asterisk, OpenPBX, and so on. But for this part of the chapter, we will be working on Trixbox.

  • A softphone – This is software that provides a real-time experience for users to make phone calls over the internet. Softphones come in handy when it comes to making calls from an external network to an internal...