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DNS

fidelis security

Detecting and Controlling Hidden DNS Tunnel Attacks

Mar 5, 2025 By Fidelis Security In Fidelis Security
DNS is the backbone of the internet, translating domain names into IP addresses to facilitate communication between devices. However, cybercriminals exploit DNS to create covert channels for data exfiltration and command-and-control (C2) operations using DNS tunneling. This technique allows attackers to bypass security measures by disguising malicious traffic as legitimate DNS queries. As DNS-based attacks continue to rise, securing DNS traffic has become a priority for organizations worldwide.
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bitsight

DNS Servers & Cybersecurity: How They Work and How to Secure Them

Feb 28, 2025 By Sabrina Pagnotta In BitSight
The Domain Name System (DNS) is a fundamental component of the Internet, translating human-friendly domain names into IP addresses that computers use to communicate. While its primary function is straightforward, DNS servers play a crucial role in both the performance and security of online activities.
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detectify

How to Prevent a Subdomain Takeover in Your Organization

Jan 22, 2025 By Detectify In Detectify
When was the last time you checked DNS configurations for subdomains pointing at services not in use? According to Crowdsource ethical hacker Thomas Chauchefoin, while expired and forgotten subdomains can easily become an entry point for an attacker to steal sensitive data and launch phishing campaigns, having the right tool in place can keep them at bay.
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graylog

DNS Security Best Practices for Logging

Jan 14, 2025 By Jeff Darrington In Graylog
Your Domain Name System (DNS) infrastructure enables users to connect to web-based resources by translating everyday language into IP addresses. Imagine going into a restaurant, in the age before the internet, only to find that the staff speaks and the menu is written in a different language from yours. Without some shared communication form, you can’t order dinner, and they can’t give you what you want.
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tigera

Introducing Low-Latency DNS Policy with eBPF in Calico Enterprise

Dec 17, 2024 By Tomas Hruby In Tigera
In Kubernetes, pods often need to securely communicate with external resources, such as internet services or APIs. Traditional Kubernetes network policies use IP addresses to identify these external resources. However, managing policies with IP addresses can be challenging because IPs often change, especially when dealing with dynamic websites or APIs.
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tigera

Optimizing Kubernetes DNS with NodeLocal DNSCache and Calico eBPF: A Practitioner's Guide

Nov 21, 2024 By Tomas Hruby In Tigera
In the world of Kubernetes, optimizing cluster performance and reliability is paramount, especially when it comes to fundamental operations like DNS lookups. NodeLocal DNSCache is one such solution that helps reduce DNS latency by caching responses locally on each node. While this tool is effective in standard Kubernetes setups, complications arise when integrating it with advanced networking solutions such as eBPF-based dataplanes.
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netwrix

What DNS over HTTPS (DoH) Is and How to Enable in Windows 10

Sep 27, 2024 By Dirk Schrader In Netwrix
DNS (Domain Name System) is a key component of the Internet infrastructure. DNS functions as a distributed directory service that translates human-readable domain names into machine-readable IP addresses. When you type a website address into your browser, the DNS system helps your browser find the right server on the internet. DNS uses a hierarchical and distributed database to manage the mapping of domain names to IP addresses.
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tigera

Advantages of Calico's DNS Policy Implementation over Cilium's DNS Policy Implementation

Aug 22, 2024 By Dhiraj Sehgal In Tigera
DNS policies play a critical role in managing and securing workload communication for cloud-native applications running on Kubernetes clusters. Two popular options for implementing DNS policies are Calico and Cilium. While both have their merits, Calico’s approach offers several distinct advantages over Cilium’s, particularly in terms of flexibility, scalability, and overall operational simplicity.
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What is a DNS (Domain Name System) and How Does a DNS Work?

Jun 24, 2024 By Cloudflare In Cloudflare
Explore the essential role of DNS (Domain Name System) in the internet ecosystem with this detailed video. Whether you're navigating the web or managing websites, understanding DNS is vital for optimizing website loading speeds and bolstering cybersecurity.. In this video, we cover: Whether you're a beginner curious about internet infrastructure or a tech enthusiast seeking deeper insights, join us as we unravel the mechanics of DNS. This video provides invaluable knowledge to empower you in navigating the digital world effectively.
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