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

Updating Nessus

Nessus can be updated either manually, or by scheduling automatic updates. The software update option can be found as a part of the Settings menu. This can be used to schedule daily, weekly, or monthly updates for Nessus software or even just the plugins. By default, Nessus uses its cloud server to download and install the updates, but you can also configure a custom server to download these updates.

Getting ready

You can update Nessus while connected to the internet or offline. If you want a hassle-free update or a quick one, you can ensure that the system is connected to the internet.

However, in order to update Nessus offline, you will have to download the update package from the Nessus website.

How to do it…

Follow these steps:

  1. Navigate to Settings, then Software Update from the home page:
  1. Choose the update frequency: Daily, Weekly, or Monthly.
  2. Provide the server details if you have any internal or external servers from which you want Nessus to fetch updates.
  3. Save the settings...