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

Setting up the context


Changes are never easy and smooth. Any kind of change within an organization typically requires extensive planning, scoping, budgeting, and a series of approvals. Implementing a complete vulnerability management program in an organization with no prior security experience can be very challenging. There would be obvious resistance from many of the business units and questions asked against the sustainability of the program. The vulnerability management program can never be successful unless it is deeply induced within the organization's culture. Like any other major change, this could be achieved using two different approaches, as described in the following sections.

Bottom-up

The bottom-up approach is where the ground-level staff initiate action to implement the new initiative. Speaking in the context of the vulnerability management program, the action flow in a bottom-up approach would look something similar to the following:

  1. A junior team member of the system administrator...