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

Introducing Nessus and Nmap


In this section, we will learn about the various features available in Nmap and Nessus. This helps the user to fully understand the tools and their capabilities before using them.

 

Useful features of Nessus

The default screen on the Nessus web interface, Scans, is shown in the following screenshot; this is where you can see all the scans that you have scheduled/performed. In the top right, you can toggle between the Scans and Settings pages. Next, we will look into the scans interface:

The left pane of the Nessus default screen displays multiple tabs classified into folders and resources. The folders are basically different views of scans present on the server. For example, selecting the Trash shows the scans that have been deleted by the user. You can further clear the trash by selecting the Clear trash option at the top right of the Trash folder.

Resources are one of the most important options, on the basis of which Nessus runs its scans. There are three options...