Phase 2 · Networking Fundamentals for Security
TopicsDNS & DNS Security
Part of the Cybersecurity Roadmap.
Summary
The Domain Name System translates domain names into IP addresses — and is also a common attack surface, via DNS spoofing, cache poisoning, and DNS tunneling used to exfiltrate data covertly.
How to Learn This
- 1Run dig or nslookup on a domain to see DNS resolution in action.
- 2Learn what DNS spoofing/cache poisoning is and why it's a serious trust attack.
- 3Understand why DNS tunneling is a technique attackers use to bypass network monitoring.
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