DNS outage: What does it mean?

Definition of DNS outage

DNS outage can give anyone who is affected a headache. In addition, sites with issues can lead to a poor user experience and a probable loss of revenue for the company.

DNS is the abbreviation for Domain Name System. It’s a web directory that connects IP addresses to domain names. Furthermore, every website has a unique IP address. Therefore, users can visit a website by entering its IP address. They are, nevertheless, difficult to recall. As a result, the majority of individuals utilize the domain name instead.

Users are directed to the correct location via DNS servers, which allow web pages to load correctly. When you can’t connect to an IP address, DNS problems occur. This type of disruption usually happens when your Internet or network connection goes down.

In a nutshell:

When potential visitors enter your site’s name (domain name) into their browser and are not redirected to its IP address, this is referred to as a DNS outage.

Why does it happen?

A variety of factors can trigger it. Among them are the following:

  • The upkeep of authoritative name servers. As part of routine maintenance, updates or reboots are occasionally required. This prevents the server from responding to DNS requests.
  • Configuration errors DNS outages can be caused by various human errors during the DNS configuration process. Examples are script errors, incorrectly typed IP addresses, firewall configuration issues, and so on are examples.
  • DoS and DDoS attacks. Distributed denial-of-service attacks are divided into two categories. DoS and DDoS attacks aim to prevent a service from being provided. If they accomplish, you may suffer a DNS outage.

How to prevent DNS outage?

Yes, avoiding DNS downtime is possible. How? You can employ the following techniques:

  • Implement DNS load balancing. This is an effective method of distributing traffic among servers. When working, it considers factors such as the number of active connections, connection time, etc. DNS load balancing employs two or more servers and manages traffic so that servers aren’t sluggish or overworked and have roughly the same amount of work. It’s a great way to deal with traffic spikes, which can be natural or the result of malware activity. It boosts web performance while reducing security risks and downtime. If one of your servers fails or is hacked, your clients’ requests will be handled by another.
  • Look for a DNS service that serves as a backup (Secondary DNS). You already have a DNS service provider (Primary DNS). You could hire a separate provider and set them up as Secondary nameservers using their various Secondary DNS servers. A copy of the zone file and DNS records will be stored on these servers. As a result, they’ll be able to reply to DNS requests the same way as Primary DNS does. You’ll have a backup in case the final one goes down.
  • Service for defending against DDoS attacks (DDoS protection service). Advanced and continuous monitoring, firewalls, software, hardware, and DDoS deflation, among other things, are used to absorb the attack.

Conclusion

A DNS outage is the equivalent of a heart attack for your online business. Don’t let this halt your operations and harm your reputation. Furthermore, be aware of the reasons so that you can prevent them before they happen!

DDoS attack : Details & Protection

The DDoS attack is one of the most dangerous cyber threats. In today’s article, we will dive deep into its primary purpose, how it functions and how you could protect yourself.

What is the purpose of a DDoS attack?

DDoS or Distributed Denial of Service is a cyber-attack type that takes advantage of network resources’ specific capacity restrictions. As a result, it disrupts critical objectives like a network, system, or server. The DDoS attack floods the targeted online site with requests. The goal is to overload the website’s capacity in order to handle more inquiries. As a result, the website will no longer function properly.

How does a DDoS attack work?

Devices connected to the Internet are the most common source of DDoS attacks. Malware infects a large number of devices, computers, and IoT devices, allowing the attacker to take control of them. Bots or zombies are phrases that are often used to describe such devices, and a botnet is a group of them.

After constructing the botnet, the hacker is now ready to begin the attack. They’re all under remote control, and each one is given orders. All of the affected zombies or bots send requests to the victim’s IP address. The network or server will eventually become overburdened and incapable of handling the load. It’s tough to tell the difference between valid and malicious traffic because each bot seems to be a typical Internet device.

Can you protect against DDoS attacks?

Yes, you could protect yourself or your business from DDoS attacks. There are different methods. Here are some of them:

  • Use a load balancing solution. When dealing with large amounts of traffic, load balancing is the most efficient option. It refers to the process of distributing traffic and routing it to other servers.
  • Invest in DDoS protected DNS service. Modern technology is required to increase your defense against DDoS attacks. Why? Because if your Domain Name System is down (DNS Outage) and your customers can’t access your site, you’re going to lose a lot of money. And nobody wants that. 
  • Monitor your traffic. You should know your traffic. This is the only method to make a distinction between typical activity and suspicious activity that could lead to a DDoS attack.

Different attack types

We can divide DDoS attacks into three types. They are as follows:

  1. Volume-based attacks. To overwhelm a device, website, or server, they employ massive amounts of false traffic.
  2. ICMP Flood, a.k.a Ping Flood – they are protocol-based attacks. They send a high number of packets to their victim network infrastructures as well as infrastructure management tools.
  3. Slowloris – they are application-layer attacks. Its goal is to flood applications with malicious queries in order to overload them.

Conclusion

Let’s review. The purpose of DDoS attack is to overload the victim’s server, system, or network. But you could defend against this. How? By implementing load balancing solutions, DDoS protection and to monitor your traffic. This will help and prevent you from losing a lot of customers and money.

Load balancing – Why should you use it?

If you’re searching on the web for information on what Load balancing is and why it’s useful, you’ve come to the right spot. So, let’s explore it and get deep into it.

What does Load balancing mean?

Load balancing is an excellent and widely used technique for managing a hostname’s traffic. It allows you to distribute incoming network or application traffic among a number of servers in an efficient and coordinated manner.

If you own and operate a popular website, you may expect a significant amount of daily visitors. Furthermore, it must be able to handle a considerable number of receiving requests from users. In addition, for each request, an answer must be delivered that is correct and contains the specific part of the information, such as text, photo, video, or application data. Finally, the entire procedure must be completed in the shortest and safest manner possible.

Why is it beneficial?

You can’t imagine how advantageous Load balancing could be. So let’s explore some of its main benefits. Here they are:

  • Load balancing gives you security for your business. Why? Using this strategy, we may examine the incoming traffic. It can report problems and protect the Domain Name System server from malware activity, or it can do both. This reduces the risk of data loss, DDoS and phishing attacks, etc.
  • It improves the speed. For example, we all know that a fast website response is critical for a better user experience. When clients make queries, they will be handled much more quickly. If there is a DNS network of servers in different parts of the world, this will be achievable. That is if Load balancing is in place. Because speed is so important in SEO, having a well-built DNS balancer will put you ahead of the competition.
  • You can find it at an excellent price. Its price is less than that of other traffic balancers. You don’t have to worry about purchasing hardware, its size, features, capability, storage space, upkeep, or anything else because it’s a SaaS service. This can be a significant sum of money for your company’s budget. Furthermore, this service adapts as your traffic increases or decreases, so you only pay for what you use.

Popular Load balancing types

Different ways of traffic balancing exist. We’ll concentrate on two of the most popular ones:

  1. GeoDNS

The GeoDNS, or Geographical Domain Name System, is a traffic distribution Load balancing system. It is based on user geolocation, as the name indicates. Traffic is dispersed evenly among data centers in multiple locations for maximum security and efficiency. For example, assume a user requests something from the United States of America, specifically the state of Virginia. If you utilize GeoDNS, the user will be redirected to your site’s American version.

Furthermore, because the chance of an attack is divided across multiple places, this strategy is highly safe. It’s incredibly typical in businesses that cater to customers from several countries.

  1. Round Robin 

Round-Robin DNS is a DNS Load balancing solution that manages traffic based on when a user request arrives and how many servers you have. The concept is straightforward: you have multiple A or AAAA records with various IP addresses. Each of these IP addresses is associated with a different web server that hosts a copy of your website. When a user wants to access your site, and their browser tries to resolve your domain name, the authoritative name server in charge of the A or AAAA records will supply the next A or AAAA record in rotation from the ones you have. You can set up records for each of your web servers, and visitors will be automatically routed based on when they reached your DNS name server.

Conclusion

To sum up, Load balancing is the traffic management process. That’s why it could be really beneficial for your company. It gives you more security, improves the speed, and you could find it at a really attractive price. So, if it sounds like it might be ideal for your company, you can take advantage of it. Don’t waste time and do it!