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)
Part 1: Reconnaissance and Footprinting
Part 2: Scanning and Enumeration

Discovering live hosts on a network

Host discovery is an important part of ethical hacking and penetration testing, as it enables an ethical hacker to identify which systems on a network are discoverable and live within an organization. If your targeted host is offline, you won’t be able to identify security vulnerabilities and send an exploit to it.

There are various techniques and tools that help ethical hackers efficiently discover live hosts on a network and identify open ports and running services. This section will help you develop the skills and knowledge to perform host discovery as an ethical hacker.

Performing passive scanning with Netdiscover

Netdiscover is a pre-installed tool within Kali Linux that enables ethical hackers to either actively scan a network range or passively listen and analyze network packets to discover live hosts. Active scanning sends probes to each device within the network to determine which hosts are online. When using passive-mode...