Penetration Testing Architecture & Methodology
Kali Linux is a specialized Debian-derived distribution structured specifically for digital forensics, security auditing, and penetration testing. It consolidates hundreds of industry-standard security utilities mapped across the offensive security testing lifecycle.
Core Penetration Testing Phases
- Reconnaissance & Footprinting: Information gathering via passive techniques (OSINT, WHOIS) and active scanning using tools like
nmap, masscan, and theHarvester.
- Vulnerability Analysis: Assessing targets for misconfigurations and outdated software using scanners such as
Nikto, Nessus, and OpenVAS.
- Exploitation & Initial Access: Executing controlled payloads against verified vulnerabilities utilizing platforms such as
Metasploit Framework (msfconsole) or brute-force engines like Hydra.
- Post-Exploitation & Privilege Escalation: Auditing user permissions, gathering local system credentials, and simulating lateral movement within compromised networks.
LAN vs. WAN Security Auditing Techniques
1. Local Area Network (LAN Auditing)
- Layer 2/3 Reconnaissance: Uses ARP scanning (
arp-scan) and Neighbor Discovery (NDP) to identify local broadcast hosts without passing through firewalls.
- Man-in-the-Middle (MitM) Assessments: Simulates ARP spoofing (
arpspoof) and DNS spoofing to evaluate local network session encryption integrity.
- Wireless Assessments: Capturing WPA2/WPA3 4-way handshakes via monitor mode (
aircrack-ng suite) and testing dynamic key security.
2. Wide Area Network & Enterprise (WAN Auditing)
- Perimeter Boundary Scanning: Mapping public IPv4/IPv6 external entry points, BGP routing paths, and exposed DNS infrastructure.
- Web Application Fuzzing: Enumerating hidden endpoints and parameters over public interfaces using tools like
Gobuster and FFUF.
- Egress Testing: Testing corporate network boundaries to ensure outbound firewall rules block unauthorized command-and-control (C2) tunnel channels.