DNS spoofing attacks manipulate DNS responses to redirect traffic from legitimate sites to malicious servers.
What is DNS Spoofing?
DNS spoofing, also called DNS cache poisoning, corrupts the DNS resolver cache to return incorrect IP addresses for domain names.
Attack Methods
- Cache Poisoning - Injecting fake DNS records into resolver caches.
- Man-in-the-Middle - Intercepting and modifying DNS responses in transit.
Protection Measures
- DNSSEC - Cryptographically sign DNS records to verify authenticity.
- Encrypted DNS - Use DNS over HTTPS (DoH) or DNS over TLS (DoT).
- Trusted Resolvers - Use reputable DNS resolvers with security features.
Conclusion
DNS spoofing attacks can redirect your users to malicious sites without their knowledge. Implementing DNSSEC, encrypted DNS, and using trusted resolvers provides essential protection against these attacks.