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


As we are aware, encryption helps keep data confidential; it plays an important role in web application security as well. Both encryption of data at rest and encryption of data in transit have to be considered while building a secure web application.

OWASP mapping

Cryptography-related vulnerabilities are part of the OWASP Top 10 2017. They are covered under A3:2017 Sensitive Data Exposure. Some of the vulnerabilities listed under this category are as follows:

  • Applications transmitting data in clear text. This concerns protocols such as HTTP, SMTP, and FTP.
  • Application using old or weak cryptographic algorithms.
  • Application using the default crypto keys.
  • Application not enforcing encryption.
  • Application not encrypting user sensitive information while in storage.
  • Application using an invalid SSL certificate.

Qualys provides an excellent online tool for testing SSL certificates. The following images show sample results from the Qualys SSL test, which can be accessed at https://www.ssllabs...