CyberCode Academy
In this lesson, you’ll learn about: network footprinting using NSlookup and WHOIS1. What is Network Footprinting? * The process of gathering technical information about a target domain * Focuses on: * DNS data * IP addresses * Domain ownership 👉 Goal: * Build a clear profile of the target’s infrastructure 2. Using NSlookup (DNS Intelligence)🔹 Tool Overview * NSlookup * A command-line tool used to query: * DNS (Domain Name System) records 🔹 What You Can Discover * Domain → IP address mapping * DNS servers * Network-related details 🔹 Interactive Mode * Allows advanced queries like: * MX Records (Mail Servers) * Identify email infrastructure 👉 Why it matters: * Reveals: * Email servers * Attack surface for phishing or targeting 3. Using WHOIS (Administrative Intelligence)🔹 Tool Overview * WHOIS * Often accessed via: * ICANN 🔹 What You Can Discover * Domain registrar * Registration & expiration dates * Name servers * Contact details: * Emails * Phone numbers * Addresses 4. Key Data ExtractedData TypeSourceValueIP AddressNSlookupNetwork targetingMX RecordsNSlookupEmail infrastructureRegistrar InfoWHOISDomain ownershipContact DetailsWHOISSocial engineeringName ServersBothInfrastructure mapping5. Strategic Importance * This data helps build: * A complete footprint of the target 🔹 Potential Use Cases (High-Level) * Identifying: * Entry points * Services to investigate * Supporting: * Security assessments * Risk analysis 6. Role in Footprinting Phase * Part of: * Early-stage reconnaissance 👉 It enables you to: * Move from: * Domain name → full infrastructure visibility Key Takeaways * NSlookup is used for DNS-level intelligence * WHOIS provides administrative and ownership data * MX records reveal email systems * Public data can expose critical infrastructure details * Footprinting is the foundation of any security assessment Big PictureThis stage is about:👉 Turning public data into actionable intelligence * Before any testing begins * You must understand: * Who owns the system * How it is structured * What services it exposes Mental Model * NSlookup → “Where is the system?” * WHOIS → “Who owns the system?” You can listen and download our episodes for free on more than 10 different platforms: https://linktr.ee/cybercode_academy [https://linktr.ee/cybercode_academy]
250 episodios
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