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Training Camp • Cybersecurity Glossary
DNS amplification is a reflection DDoS that abuses open resolvers to flood a spoofed victim with oversized responses, multiplying attack traffic.
DNS Amplification Definition: DNS amplification is a reflection DDoS that abuses open resolvers to flood a spoofed victim with oversized responses, multiplying attack traffic.
DNS amplification is a reflection-based distributed denial-of-service attack in which an attacker sends small DNS queries with a spoofed source address to open resolvers, which then send much larger responses to the victim. This amplification multiplies attack traffic many times over, overwhelming the target's bandwidth. Mitigations include disabling open recursion, implementing source-address validation (BCP 38), rate limiting, and using DDoS protection services.
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