Author: Staff

Implementing DNS-over-HTTPS DoH at Scale

DNS-over-HTTPS has emerged as a powerful solution for enhancing the privacy and security of DNS resolution by encrypting queries and responses within standard HTTPS traffic. Traditionally, DNS queries have been transmitted in plaintext, making them vulnerable to interception, manipulation, and surveillance by internet service providers, attackers, or state-sponsored entities. DoH addresses these vulnerabilities by securing…

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DNS in Edge Computing and IoT

The evolution of edge computing and the proliferation of Internet of Things devices have fundamentally changed the way data is processed and transmitted across networks. Traditional cloud-based architectures, which rely on centralized data centers, are increasingly being complemented or replaced by decentralized computing models that move processing closer to the source of data generation. This…

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DNS Lookups Command Line Tools and Utilities

DNS lookups are an essential function in network troubleshooting, diagnostics, and performance monitoring. When a user enters a domain name into a browser, DNS lookups occur in the background to translate that domain into an IP address that allows communication over the internet. While this process is normally invisible to end users, system administrators, network…

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Using DNS for Service Discovery in Microservices Architectures

Service discovery is a fundamental aspect of microservices architectures, allowing distributed applications to dynamically locate and communicate with one another without relying on static configurations. As modern applications grow in complexity, with services deployed across multiple hosts, containers, and cloud environments, the need for an efficient and resilient service discovery mechanism becomes increasingly critical. DNS…

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The Economics of DNS Cost Factors and ROI

DNS is one of the most critical components of internet infrastructure, ensuring that users can access websites, applications, and online services seamlessly. While it operates in the background and is often taken for granted, the economics of DNS play a significant role in the decision-making processes of businesses, service providers, and organizations that depend on…

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Zone Transfers AXFR IXFR and Security Concerns

Zone transfers play a crucial role in the operation of the Domain Name System, allowing the replication of DNS records between authoritative name servers to maintain consistency and reliability. These transfers ensure that secondary name servers stay synchronized with the primary name server, enabling redundancy and resilience in DNS operations. Without proper zone transfer mechanisms…

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Open Source DNS Software Bind PowerDNS and More

DNS is one of the most fundamental components of the internet, responsible for translating human-readable domain names into numerical IP addresses that computers use to communicate. The resilience and security of DNS infrastructure depend heavily on the software used to manage and operate DNS services. Open source DNS software has played a significant role in…

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DNS Records for Email Authentication SPF DKIM and DMARC

Email authentication is a critical aspect of cybersecurity, helping to protect organizations and users from phishing, spoofing, and spam. Because email is one of the most widely used communication methods, it is also a prime target for cybercriminals who exploit vulnerabilities in the email system to impersonate legitimate senders, deceive recipients, and distribute malicious content.…

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DNS Failover Strategies for Business Continuity

DNS failover is an essential component of business continuity planning, ensuring that domain resolution remains functional even in the event of server failures, network outages, or cyberattacks. Because DNS serves as the foundation for internet connectivity, any disruption to its functionality can lead to widespread downtime, preventing customers from accessing websites, applications, and critical services.…

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DNS Amplification Attacks Understanding and Mitigating Risks

DNS amplification attacks are one of the most severe threats to internet infrastructure, capable of overwhelming networks and disrupting online services on a massive scale. These attacks exploit the open nature of the Domain Name System, taking advantage of misconfigured DNS resolvers to generate a disproportionately large amount of traffic directed at a targeted victim.…

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