Book Image

Reconnaissance for Ethical Hackers

By : Glen D. Singh
5 (1)
Book Image

Reconnaissance for Ethical Hackers

5 (1)
By: Glen D. Singh

Overview of this book

This book explores reconnaissance techniques – the first step in discovering security vulnerabilities and exposed network infrastructure. It aids ethical hackers in understanding adversaries’ methods of identifying and mapping attack surfaces, such as network entry points, which enables them to exploit the target and steal confidential information. Reconnaissance for Ethical Hackers helps you get a comprehensive understanding of how threat actors are able to successfully leverage the information collected during the reconnaissance phase to scan and enumerate the network, collect information, and pose various security threats. This book helps you stay one step ahead in knowing how adversaries use tactics, techniques, and procedures (TTPs) to successfully gain information about their targets, while you develop a solid foundation on information gathering strategies as a cybersecurity professional. The concluding chapters will assist you in developing the skills and techniques used by real adversaries to identify vulnerable points of entry into an organization and mitigate reconnaissance-based attacks. By the end of this book, you’ll have gained a solid understanding of reconnaissance, as well as learned how to secure yourself and your organization without causing significant disruption.
Table of Contents (15 chapters)
1
Part 1: Reconnaissance and Footprinting
8
Part 2: Scanning and Enumeration

Working with Active Reconnaissance

The more information known about a target, the more ethical hackers are able to identify security vulnerabilities, which can be exploited to get unauthorized access to the systems and networks of organizations. Active reconnaissance helps ethical hackers and penetration testers to collect and analyze information about a target that’s not accessible or available during passive reconnaissance. Since passive reconnaissance relies on Open Source Intelligence (OSINT) and publicly available information from multiple online sources, the information may not be up to date, and inaccuracy affects planning future operations such as weaponization and exploitation of the target. With active reconnaissance, ethical hackers collect data in real time to better identify security vulnerabilities.

In this chapter, you will learn how to efficiently scan hosts on a network to identify their operating systems, open ports, and running services using automated...