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How to prevent DNS Spoofing in AWS.
- DNS spoofing, also known as DNS cache poisoning, involves introducing false DNS information into a resolver's cache to redirect users to malicious websites.
- DNS was developed without robust security measures, allowing incorrect DNS data to remain until TTL expires.
- The Domain Name System (DNS) assigns human-readable domains to IP addresses and uses authoritative nameservers for resolution.
- DNS resolvers cache DNS data to improve performance, but this can be exploited in DNS cache poisoning attacks.
- DNS cache poisoning attacks involve impersonating DNS nameservers to provide false IP addresses and redirect traffic.
- Attackers use techniques like man-in-the-middle attacks, DNS server hijacking, and spam for DNS spoofing.
- Risks of DNS poisoning include data theft, malware infection, halting security updates, and censorship.
- Preventing DNS poisoning involves using DNS spoofing detection tools, DNSSEC, encryption, and being cautious as an endpoint user.
- AWS Firewall Manager offers centralized protection across accounts and resources, including AWS WAF, Shield Advanced, VPC security groups, and Route 53 Resolver DNS Firewall.
- Firewall Manager simplifies administration, applies protections across accounts, and provides centralized monitoring of DDoS attacks.
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