DNS Security Vulnerabilities and Prevention
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DNS Security Vulnerabilities and Prevention

Sekurenet Sekurenet

Sekurenet

Cyber security trainings/Threat Modeling/ Application Security/Secure code

发布日期: 2025年2月24日
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The Domain Name System (DNS) translates domain names into IP addresses, enabling network communication. However, it is prone to exploitation, leading to security risks.

Common DNS Vulnerabilities

  1. Man-in-the-Middle (MITM) Attacks – Attackers manipulate DNS responses, injecting false data that users unknowingly trust.
  2. DNS Flood Attacks – A type of DDoS attack that overwhelms DNS servers, disrupting services.
  3. Cache Poisoning – Malicious data is injected into DNS caches, redirecting users to fraudulent sites.
  4. DNS Spoofing – Attackers alter DNS records, tricking users into entering credentials on fake websites.
  5. Packet Sniffing – Unencrypted DNS queries can be intercepted and manipulated.

DNS Security Measures

  • Keep DNS resolvers private, accessible only to trusted users.
  • Regularly audit applications and APIs to detect vulnerabilities.
  • Enable two-factor authentication (2FA) for third-party DNS services.
  • Understand and secure DNS architecture.
  • Restrict unnecessary access to DNS servers.

Proactive DNS security can mitigate these risks, ensuring safer network operations.

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