Book Image

Securing Network Infrastructure

By : Sairam Jetty, Sagar Rahalkar
Book Image

Securing Network Infrastructure

By: Sairam Jetty, Sagar Rahalkar

Overview of this book

Digitization drives technology today, which is why it’s so important for organizations to design security mechanisms for their network infrastructures. Analyzing vulnerabilities is one of the best ways to secure your network infrastructure. This Learning Path begins by introducing you to the various concepts of network security assessment, workflows, and architectures. You will learn to employ open source tools to perform both active and passive network scanning and use these results to analyze and design a threat model for network security. With a firm understanding of the basics, you will then explore how to use Nessus and Nmap to scan your network for vulnerabilities and open ports and gain back door entry into a network. As you progress through the chapters, you will gain insights into how to carry out various key scanning tasks, including firewall detection, OS detection, and access management to detect vulnerabilities in your network. By the end of this Learning Path, you will be familiar with the tools you need for network scanning and techniques for vulnerability scanning and network protection. This Learning Path includes content from the following Packt books: •Network Scanning Cookbook by Sairam Jetty •Network Vulnerability Assessment by Sagar Rahalkar
Table of Contents (28 chapters)
Title Page
Copyright and Credits
About Packt
Contributors
Preface
Index

How to model threats?


The process of threat modeling can vary based on multiple factors. However, in general, the threat modeling process can be broken down into the following steps:

  1. Identification of security objectives: Before we actually get started with threat modeling, it is absolutely important to understand the objectives behind doing the threat modeling exercise. It may be possible that there are certain compliance or regulatory requirements that need to be addressed. Once the driving factors are understood, it becomes easier to visualize probable threats during the process.
  1. Identification of assets and external factors/dependencies: Unless we know precisely what are we trying to protect, it just won't be possible to enumerate threats. Identifying assets helps build a basis for further modeling processes. Assets need protection from attackers and may need to be prioritized for countermeasures. There's also a need to identify any possible external entity or dependency that may not be...