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.

CDN: What is it and how to create it?

CDN has a stronghold on all of us! We are all users, not just business people, and we engage with CDNs every day. Without it, content delivery would not be as efficient as it is now. Each image, video, content, etc., is served via a CDN. If this got you excited and want to learn more, you’re in the right place. So, let’s start.

What does CDN mean?

CDN is the short abbreviation of “Content Delivery Network.” What does it mean? It’s a server network covering a vast geographic area and has specific server locations. The goal is to comprehensively protect the territory from which potential tourists may originate. 

Every server on a network is referred to as a PoP or Point of Presence. This is because they all have data for users of specific locations in their cache memory. It’s a service that you can use in addition to your primary web hosting. 

In what way does it work?

The principle is straightforward. DNS resolvers are on their way, analyzing the DNS request. They will provide the IP address of the closest cache server based on the request’s source. Some service providers refer to them as delivery nodes. Those DNS servers are strategically located in various areas. You can have numerous depending on your DNS provider, and you may be able to place even more in your most critical location.

Depending on your provider, you can employ a service GeoDNS instead of standard DNS. It allows you to assign specific IP addresses to different locations. You won’t send all of your traffic to the same place this way. You’ll be able to identify the required quantity of web hosting servers.

How to create a CDN?

If you wish to create even a primary content delivery network, you’ll need the following items:

  1. To begin, you’ll need a domain name or a subdomain.
  2. Second, there should be at least two servers in different places. You can use virtual or dedicated servers.
  3. Last but not least, there’s the GeoDNS utility. When you use it, visitors who request the domain are routed to the server that is nearest to them.

Why is it beneficial?

CDN is very useful. Here are some of its most significant advantages:

  • It helps to handle high loads of traffic (load balancing) efficiently. So, it aids in efficiently handling heavy traffic loads, surges, and network congestion. It can stand up to a lot of traffic without breaking down.
  • It protects against DNS downtime or also known as DNS outage. Using Anycast DNS, you may improve the availability of your CDN service. For instance, if a server goes down due to routine maintenance, a failure, or an attack, the requests will be routed to another server. 
  • CDN could increase the speed. Because content delivery network PoPs are located on IXPs, you benefit from increased speed and a strategic location. All of a visitor’s questions will travel a lot less. A shorter distance equals a speedier outcome.

Conclusion

The speed of a website is one of the most essential factors in determining its effectiveness. You might receive performance improvements and a better user experience using CDN. If you give it a chance, it will not disappoint you. So, please don’t spend any more time and put it into action in your system.