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 methodology

Performing penetration testing on VoIP streaming and media protocols follows a bit of a different approach than the penetration testing methodology that we follow for other technologies, such as the web or networks. The following are the steps performed in IP telephony network penetration testing that we perform to identify potential threats:

  1. Enumeration – In simple terms, this is defined as gathering the right information that is required to identify potential threats. The following information is required to begin with the exploitation phase:
    1. Identify the IP telephony SIP servers.
    2. Identify the potential targets.
    3. Identify the vulnerable services on the identified targets.
    4. Run NMAP SIP scripts.
    5. Run vulnerability scanning.
  2. SIP penetration testing – Once all the data is successfully gathered, the following attacks will be performed on the potential targets:
    1. Brute-force – SIP server credentials
    2. Brute-force SIP authentication...