pdf Linux for Ethical Hackers: Volume 1 Foundations & Reconnaissance

Build the Linux, networking, and reconnaissance foundations behind ethical hacking.

Linux for Ethical Hackers — Volume 1: Foundations & Reconnaissance is a practical field guide for aspiring ethical hackers, cybersecurity students, CTF players, and security enthusiasts who want to develop a stronger foundation before diving deeper into penetration testing.

Instead of treating ethical hacking as a collection of random commands and tools, this book builds your understanding progressively—from Linux fundamentals and networking to Linux security, reconnaissance, and vulnerability discovery.

Inside, you'll learn how to:

• Navigate and work confidently in the Linux terminal
• Understand Linux filesystems, users, groups, permissions, processes, and services
• Work with Bash and automate repetitive tasks
• Build a practical understanding of IP addressing, subnetting, TCP/IP, ports, DNS, ARP, routing, and sockets
• Understand Linux authentication, permissions, SUID/SGID, capabilities, SSH, logs, and hardening
• Perform information gathering and passive reconnaissance
• Work with DNS reconnaissance, WHOIS, subdomain enumeration, and network discovery
• Use Nmap for host and service discovery
• Understand service enumeration and banner grabbing
• Understand vulnerabilities, CVEs, and vulnerability databases
• Approach vulnerability scanning systematically
• Explore web, SMB, FTP, SSH, and HTTP service enumeration
• Recognize common Linux service misconfigurations

The book is organized into five progressive parts:

Part I — Linux Fundamentals
Part II — Networking for Hackers
Part III — Linux Security Fundamentals
Part IV — Reconnaissance
Part V — Vulnerability Discovery

The current table of contents contains 54 chapters, ending with Linux Service Misconfiguration.

This book is designed for authorized security testing, self-owned labs, deliberately vulnerable practice environments, and Capture-the-Flag (CTF) platforms. Never test systems or networks without explicit authorization.

If you want to move beyond simply copying commands and start understanding the systems, networks, services, and reconnaissance process behind ethical hacking, this book gives you a structured foundation to build on.