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DNS DNS servers

Why Use Knot DNS Server?

Knot DNS server is a high-performance, open-source DNS server that has become a top choice for businesses, internet service providers (ISPs), and organizations managing DNS infrastructure. In today’s internet-driven world, having a fast, secure, and reliable DNS solution is essential. Knot DNS stands out with its advanced features, scalability, and efficient design, making it a robust option for those seeking to optimize their DNS operations. In today’s article, we will explain what it is, why you should use it, how it works, and what benefits it offers.

What Is Knot DNS Server?

Knot DNS server is an open-source, high-performance DNS server designed and maintained by the CZ.NIC association, a non-profit organization managing the Czech national domain registry. Unlike general-purpose DNS servers, Knot DNS focuses on being lightweight, fast, and feature-rich. It supports modern DNS requirements like DNSSEC, dynamic updates, and efficient zone transfers, making it an excellent choice for enterprises, internet service providers (ISPs), and DNS hosting providers.

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DNS DNS records DNS servers

DNS Propagation Guide: How Long Does It Take for DNS Changes to Propagate?

DNS propagation is a critical concept to understand when making changes to your website, switching hosting providers, or updating domain configurations. Whether you’re modifying DNS records like A, MX, or CNAME, it’s important to know how long these changes take to propagate and why delays occur. We’ll break down the process, explain how long it usually takes, and provide tips on how to minimize wait times.

What Is DNS Propagation?

DNS (Domain Name System) is essentially the phonebook of the internet, translating domain names (like www.example.com) into IP addresses, which are the numerical addresses servers use to find each other.

When you update your DNS records whether changing your website’s IP address, adding an email server, or pointing your domain to a new host—those changes need to propagate throughout the global DNS network.

DNS propagation is the time it takes for the DNS changes to be distributed across all DNS servers worldwide. Until the propagation process is complete, some users might see your website with the old DNS settings, while others see it with the updated ones.

How to check DNS propagation?

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DNS Network Security

Ensuring High Availability with DNS Failover

In today’s digital era, where uninterrupted online presence is not just desired but essential, DNS Failover has emerged as a pivotal solution for businesses aiming to achieve high availability. This comprehensive guide delves into the intricacies of DNS Failover, offering insights into its importance, functionality, and implementation strategies for maintaining continuous online operations.

Understanding DNS Failover

DNS Failover is a process that ensures users can access your website even when your primary server goes down. It works by automatically redirecting traffic to a secondary, operational server. This seamless transition is crucial in a world where even a minute of downtime can lead to significant financial and reputational losses.

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DNS

The Importance of DNS Monitoring for Website Security

The Domain Name System (DNS) can be likened to the phone book of the internet. It translates human-friendly domain names into IP addresses that computers use to identify each other. When you type in a website address like “www.example.com” into your browser, the DNS system looks up the corresponding IP address, allowing your browser to connect to the website’s server. But, like many foundational internet technologies, DNS is not without its vulnerabilities. This is where DNS monitoring comes into play as a critical component of website security.

What is DNS Monitoring?

DNS monitoring involves regularly observing and analyzing DNS traffic for signs of malicious activity or operational issues. It’s about keeping an eye on DNS resolution processes, understanding regular patterns, and quickly detecting anomalies that could indicate a security threat or performance issue.

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DNS records Security

Detailed guide of how DNSSEC works

DNSSEC adds the security to DNS that it desperately needs. It is a chain of trust that guarantees that the data (DNS records) were not modified on the way and that they come from the right source.

​What is DNSSEC?

DNSSEC is a set of security measures that protect DNS data by providing cryptographic authentication, authenticated denial of existence, and data integrity.

DNSSEC basically proves that the data came from the right source, stops data that can’t prove the right source, and data that was modified on the way.

Discover one of the most popular DNSSEC services on the market!

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Cyber attacks

Understanding DNS Spoofing: A Guide for Non-Techies

DNS spoofing is a malicious cyber attack that can redirect users from a legitimate website to a malicious one. It is becoming increasingly common and can be used to steal sensitive information, launch denial of service attacks, or intercept and modify data. As a result, organizations must implement a multi-faceted approach that includes technical and administrative security measures to protect their networks. In this article, we will explain what DNS spoofing is, how it is performed, and how to prevent it.

DNS Spoofing briefly explained

DNS Spoofing, also known as DNS Cache Poisoning, is a type of cyber attack where an attacker exploits a vulnerability in the Domain Name System (DNS) to redirect internet users from legitimate websites to malicious ones. By manipulating the DNS records, an attacker can redirect users to a malicious website that looks legitimate and can dupe unsuspecting victims into providing sensitive information, such as bank details, or downloading malicious software. The attacker can also use DNS spoofing to launch a Denial of Service (DoS) attack, where the attacker floods the target website with fake requests to overload the server and make it unavailable to legitimate users. DNS Cache Poisoning attacks are becoming increasingly common, making it vital for organizations to take steps to protect their networks from this type of attack.

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DNS DNS servers

All you need to know about DNS outage

In brief, we will explain exactly what a DNS outage is, why you should be worried, why it happens, and, most importantly, can you prevent DNS outages. We have a lot of ground to cover, so let’s get started.

What is a DNS outage?

A DNS outage is a disruption in the DNS service that stops a particular domain name from being resolved to its IP address.

The DNS (Domain Name System) is a network of servers that translate domain names to IP addresses and facilitate the use of the Internet.

We, people, remember domain names, but we need to access the web hosts where their resources are hosted. This is why we need the IP addresses of the web hosts that the DNS translates for us.

If you have a website and you are experiencing a DNS outage, that means that during that time, there is no DNS server that can respond to clients’ queries. The clients won’t get your server’s IP address and won’t receive service until your DNS servers start working again.

What is DNS tunneling attack and how to protect yourself?

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Cyber attacks

List of common DNS attacks

Hacking DNS servers has become a popular and profitable business for hackers. Through time, they have developed different techniques to reach their criminal objectives. Here you have a list of common DNS attacks you should be aware of.

DNS spoofing

The objective of DNS spoofing is to infect a DNS server and change its address records with those of a bad actor’s site. That site looks and feels like the real one, but it is a fake copy. 

The users are deceived that the traffic is oriented to the right site. When users reach this malicious destination, they are pushed to share sensitive personal or banking information.

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DNS records DNS servers Security

Private DNS server – What is it?

What does a Private DNS server mean?

Although most people utilize public DNS services managed by their preferred ISP, anyone can set up their DNS server. Private DNS is a technique that gives the server owner complete control over the IP addresses and network access that are accessible. They are DNS networks that are independent of the Public DNS.

Furthermore, we refer to Private as DNS over TLS (Transport Layer Security) or DNS over HTTPS (Hypertext Transfer Protocol Secure). While utilizing DoT (DNS over TLS) or DoH (DNS over HTTPS), all DNS queries are encrypted. This makes it far more difficult for shady outside parties to monitor your internet activity. 

Start using Private DNS server with numerous benefits!

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