Nowadays, most people and companies use Public DNS services instead of Private DNS server. This has its dangers. But before we find out what they are and why it is so important to switch to Private DNS, let’s see what a DNS server actually is.
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In today’s internet landscape, security and privacy are more critical than ever. Two technologies that play a pivotal role in safeguarding our browsing activity are DNS-over-TLS (DoT) and DNS-over-HTTPS (DoH). These protocols were designed to protect DNS queries from being exposed, eavesdropped on, or tampered with by encrypting them. While they share the same core goal of securing DNS traffic, they have different underlying mechanics and implementations. In this blog post, we will break down DoT and DoH, exploring how they work, the benefits they provide, and the nuances between the two technologies.
The Need for Secure DNS
Before diving into DoT and DoH, let’s briefly review what DNS (Domain Name System) is. DNS is often referred to as the “phone book of the internet” because it translates human-readable domain names (like
(more…)www.example.com) into IP addresses that computers use to identify each other on the network. -
NXDOMAIN is one of the errors that often appear when browsing the Internet or managing a website. Understanding what this error is, why it occurs, and how to handle it is crucial for both website owners and users.
What is NXDOMAIN?
NXDOMAIN (non-existent domain) is a DNS (Domain Name System) error that indicates a domain name does not exist. When a user tries to access a website, their browser sends a request to a DNS server to resolve the domain name into an IP address. If the DNS server cannot find a matching record for the requested domain, it returns an NXDOMAIN response. This essentially tells the browser that the domain name does not exist.
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In DNS (Domain Name System) operations, facing a SERVFAIL error can be frustrating for network administrators and end-users. This error message, which stands for “Server Failure,” signifies that the DNS server was unable to process a query due to a problem with one or more of its name servers. Understanding the root causes and implementing effective solutions is crucial for maintaining the smooth operation of internet services. So, let’s explain a little bit more about the common causes of these errors and provide practical solutions to address them.
Understanding SERVFAIL
The SERVFAIL response is a type of DNS reply that indicates a temporary failure that prevents the DNS server from returning the requested DNS records. Unlike NXDOMAIN, which clearly states that the domain name does not exist, “Server Failure” suggests that the error is transient and may be resolved by retrying the request after some time. The ambiguity of this error often leads to confusion and repeated failed attempts without addressing the underlying issue.
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The digital space has opened up countless possibilities for communication, entertainment, business, and more. But, like every good thing, it has a darker side. Cybercrime has quickly risen as one of the most severe threats in this internet-driven age, with a spectrum of different techniques used by hackers worldwide. One such technique, which is commonly employed to disrupt services and compromise data, is the DDoS attack. This blog post will unpack the concept of DDoS attacks, and take a look at some of the most significant incidents of this form of cybercrime in history.
What is a DDoS Attack?
DDoS, or Distributed Denial of Service, is a malicious attempt to disrupt the regular functioning of a network, service, or server by overwhelming it with a flood of Internet traffic. These attacks work by utilizing multiple compromised computer systems as sources of traffic, often forming what is known as a ‘botnet’.
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In the realm of modern digital communication, the Domain Name System (DNS) plays a critical role in translating human-readable domain names into machine-readable IP addresses. DNS monitoring is a vital aspect of maintaining a secure and efficient network infrastructure. In this blog post, we will delve into the significance of it, its functioning, the advantages of its implementation, and a comparison between DNS monitoring, TCP and UDP monitoring.
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You may have heard of DNS cache as a website owner or regular internet user. But do you know what it is and how it affects your online activities? In this blog post, we will dive into the world of DNS cache, explaining what it means, how it works, and why it’s essential.
What is DNS Cache?
DNS stands for Domain Name System, which is responsible for converting human-readable domain names into IP addresses that computers can understand. Every time you visit a website, your device sends a DNS query to a DNS resolver, which then provides the IP address of the website’s server. DNS cache, therefore, refers to the temporary storage of this information on your device, making it quicker to access the same website again in the future.
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DNSSEC is an absolutely beneficial approach because its primary goal is security. In other words, it’s a DNS protocol Security Extension. So if you want to learn more about it and how it works, you are in the right place. So let’s start.
DNSSEC – meaning
DNSSEC stands for Domain Name Security Extensions. It is an excellent technique to give your domains an extra degree of security. DNSSEC service is an advanced DNS feature that associates digital signature (DS) records with DNS data. As a result, the legitimacy of the original domain name may be established.
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What is the purpose of TCP monitoring?
The TCP monitoring report displays the cumulative efficiency of all TCP connections over time. It will wait for the TCP connection to be established for any TCP application before sending the request string and watching for the server to deliver the desired content. The health check will be successful as soon as a TCP connection has been established, even if no client request and server response are defined.