So, what is DDoS? In computer science, a denial-of-services attack is a cyber-attempt to bring down a computer or network system by causing it to either temporarily or permanently deny service to an Internet user. Most commonly, these attacks are launched by attackers using a distributed denial of service (DDoS) tool or protocol. A DDoS usually targets a single server or application but can also be launched against many different websites, which often results in much larger system impacts. In this article, we’ll discuss what is DDoS, how it can be prevented and why you should use a quality DDoS prevention solution.
What is DDoS anyway? The acronym ‘DDoS’ stands for Distributed Denial-of-Service and is typically applied to attacks on a single server or application layer. A DDoS is usually initiated by a large number of user IP addresses using a single application. For example, an attacker could send traffic to thousands of sites, overwhelm a legitimate web server with requests, or execute a man-in-the-middle attack, where the attacker spoofs an incoming request into the victim’s server. While some DDoS attacks are performed through the use of a vulnerability in a specific application, many are carried out by attackers leveraging free resources and scripts on the Internet, such as shared servers, Internet cafes, Wi-Fi hotspots and even free software applications on the open source platform Linux.
The best DDoS prevention approach is to prevent application layer attacks by implementing mitigation technologies. There are several popular technologies in action today that aim to mitigate attacks on application layers such as servers, routers, VPNs, and even end-users via measures such as address filtering, security monitoring, and spamming control. Below we’ll discuss some popular mitigation technologies and how they can help you prevent the latest types of DDoS attacks.
The most common way to prevent application layer attacks is to detect and block known bad IP addresses. There are several open source tools such as NoJoStacle that are available for free that enable any network administrator to quickly identify unfamiliar or unsafe application layer addresses. Some of the top application layer attacks include Mirai, which use a bot to send fake traffic to target IPs, and freedom, which is a DDoS tool that uses broadcast packets to send large numbers of false positive commands to target IPs.
Another way to prevent application layer attacks is through layer 2 firewall protection. Some of the top DDoS attacks in recent years have used the port forwarding protocol to bypass layer 2 firewalls and expose systems to a larger attack. Port forwarding is often implemented with the use of a fake service or software program to hide the actual application. Some popular tools for doing this include Chinese Decoy and HijackThis.
Some businesses choose not to use application-layer protection because they believe they can defend against DDoS attacks on the internet. While this may be true in some cases, the true benefit of having strong DDoS mitigation is in the preventative measures rather than the response to an attack. Application layer protection will only help prevent attackers from sending traffic to your system and will not help in any way to recover from an attack. For businesses that must deal with DDoS attacks on a regular basis, application-layer protection is a must.
There are a few ways to go about getting DDoS protection for your business. You can look into managed service providers who have been certified by Imperva to handle DDoS attacks on a routine basis. Imperva is one of the most trusted companies in terms of DDoS protection and has been assisting businesses around the world for over five years with prevention and recovery. While there are other services that claim to offer DDoS protection, many are simply not as effective as Imperva. A managed DDoS service from a top provider such as Imperva will be able to stop attacks before they start and will also be able to restore service quickly once an attack has finished.
If you are wondering what is DDoS? One of the best ways to think about what is DDoS is to look at what would be classified as a distributed denial of service (DDoS) attack. An attack of this nature requires an attacker to send multiple attacks with the aim of flooding an Internet-connected server or using automated processes to overload servers and applications. While it is nearly impossible to predict when an attack might occur, having a reliable provider of DDoS protection can save you from financial losses and other disasters brought on by these types of attacks.