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 confirm Nessus vulnerabilities using Nmap and other tools


Most of the vulnerabilities reported by Nessus are signature and value-based, which Nessus makes a decision on based on the code present in the plugins. It is required to confirm these vulnerabilities using manual techniques such as Nmap scripts or port-specific open source tools. This will allow the administration team to put their efforts into the mitigation of the actual vulnerabilities instead of false positives. Also, sometimes, Nessus reports vulnerabilities for which workarounds have already been applied as Nessus only checks with respect to the conditions mentioned in the plugin and cannot recognize any other deviations. In this recipe, we will look at sets to verify multiple vulnerabilities reported by Nessus using Nmap and other open source tools.

In order to create this recipe, we will perform a demo basic network scan on Metasploitable 2's vulnerable virtual machine (look at the Getting ready section in order to...