Search icon CANCEL
Subscription
0
Cart icon
Your Cart (0 item)
Close icon
You have no products in your basket yet
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Conferences
Free Learning
Arrow right icon
Arrow up icon
GO TO TOP
Reconnaissance for Ethical Hackers

You're reading from   Reconnaissance for Ethical Hackers Focus on the starting point of data breaches and explore essential steps for successful pentesting

Arrow left icon
Product type Paperback
Published in Aug 2023
Publisher Packt
ISBN-13 9781837630639
Length 430 pages
Edition 1st Edition
Arrow right icon
Author (1):
Arrow left icon
Glen D. Singh Glen D. Singh
Author Profile Icon Glen D. Singh
Glen D. Singh
Arrow right icon
View More author details
Toc

Table of Contents (15) Chapters Close

Preface 1. Part 1: Reconnaissance and Footprinting
2. Chapter 1: Fundamentals of Reconnaissance FREE CHAPTER 3. Chapter 2: Setting Up a Reconnaissance Lab 4. Chapter 3: Understanding Passive Reconnaissance 5. Chapter 4: Domain and DNS Intelligence 6. Chapter 5: Organizational Infrastructure Intelligence 7. Chapter 6: Imagery, People, and Signals Intelligence 8. Part 2: Scanning and Enumeration
9. Chapter 7: Working with Active Reconnaissance 10. Chapter 8: Performing Vulnerability Assessments 11. Chapter 9: Delving into Website Reconnaissance 12. Chapter 10: Implementing Recon Monitoring and Detection Systems 13. Index 14. Other Books You May Enjoy

Sub-domain enumeration

Threat actors such as hackers use both passive and active reconnaissance techniques to identify the sub-domains of a target. Usually, an organization will register a domain name (parent domain) and create additional sub-domains, where each sub-domain points to a different server that’s owned by the target. For instance, domain.local points to the IP address of the web server and mail.domain.local points to the IP address of the email server. Therefore, enumerating the sub-domains and resolving their IP addresses helps attackers to identify security vulnerabilities and the attack surface of additional systems owned by the target.

Sometimes, a sub-domain is used to host a test environment for users that are misconfigured, running a vulnerable or less secure application, and connected to the internal corporate network. If an attacker were to compromise this system, they would be able to pivot their attacks through the compromised system to the internal...

lock icon The rest of the chapter is locked
Register for a free Packt account to unlock a world of extra content!
A free Packt account unlocks extra newsletters, articles, discounted offers, and much more. Start advancing your knowledge today.
Unlock this book and the full library FREE for 7 days
Get unlimited access to 7000+ expert-authored eBooks and videos courses covering every tech area you can think of
Renews at $19.99/month. Cancel anytime