Book Image

Mastering Defensive Security

By : Cesar Bravo
Book Image

Mastering Defensive Security

By: Cesar Bravo

Overview of this book

Every organization has its own data and digital assets that need to be protected against an ever-growing threat landscape that compromises the availability, integrity, and confidentiality of crucial data. Therefore, it is important to train professionals in the latest defensive security skills and tools to secure them. Mastering Defensive Security provides you with in-depth knowledge of the latest cybersecurity threats along with the best tools and techniques needed to keep your infrastructure secure. The book begins by establishing a strong foundation of cybersecurity concepts and advances to explore the latest security technologies such as Wireshark, Damn Vulnerable Web App (DVWA), Burp Suite, OpenVAS, and Nmap, hardware threats such as a weaponized Raspberry Pi, and hardening techniques for Unix, Windows, web applications, and cloud infrastructures. As you make progress through the chapters, you'll get to grips with several advanced techniques such as malware analysis, security automation, computer forensics, and vulnerability assessment, which will help you to leverage pentesting for security. By the end of this book, you'll have become familiar with creating your own defensive security tools using IoT devices and developed advanced defensive security skills.
Table of Contents (23 chapters)
Section 1: Mastering Defensive Security Concepts
Section 2: Applying Defensive Security
Section 3: Deep Dive into Defensive Security

Working with IPS/IDS

In this section, we will explain what an IDS and an IPS are, provide some examples of these systems, and also consider the differences between these two similar technologies.

What is an IDS?

An IDS is a passive monitoring solution that detects unwanted intrusions in our networks.

Once the intrusion is detected, the IDS will send an alert to a security analyst for further investigation and action (as shown in the following figure):

Figure 8.28 – IDS representation

In terms of deployment, an IDS can be deployed at the host level (HIDS) or network level (NIDS).

There are two main IDS engines, one that is based on signatures (examples are classic antiviruses that use a database of signature to detect malicious software), and one that is anomaly-based, which detects intrusions based on deviations from established patterns. In this latter category, there are also systems that leverage cognitive computing to enhance the recognition...