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Learning about DDoS attacks and their impact in a Cloud setting.

Cloud computing & DDoS attacks

Cloud computing is a fast developing and expanding technology which has been widely embraced by many companies. There are, however, various threats, of which one of them is DDoS (Denial of Service). It can impact any kind of cloud-based organisation.


Let’s review “The National Institute of Standards and Technology” which has recently identified cloud-based computing as “a device for providing convenient, on-demand access to a common and highly configurable pool of IT resources that can be quickly provisioned and liberated with very limited management effort or interaction with the service provider.


For example, a common pool of highly configurable computing resources can be rapidly procured and released with the least amount of management effort or interaction with the service provider. Pay-as-you-go, with virtualization, on-demand access, flexibility, and lower maintenance costs are some of the factors that are contributing to the popularity of cloud computing, Platform as a service (PaaS), infrastructure as a service (IaaS), and software as a service (SaaS) are all service patterns of cloud computing. SaaS enables you to execute and use a program or application without having to install it on your own machine. IaaS uses the technology of virtualization to provide infrastructure by sharing equipment with multiple customers or renters.

How can the attack be detected?

In the following forms, DDoS attacks are initiated by targeting the victim:


The attacker might detect a bug or flaw in the software implementation to disrupt the service.
Some attacks consume all the victim’s bandwidth capacity or system resources.


Attackers scan the network for devices with a certain vulnerability and then use them as agents of the attacker. These devices are referred to as “zombie machines” and they use spoofed IPs. As well as the structure of the Internet also gives rise to many conditions that cause a denial of service attacks. In short, the security of the Internet depends on hosts. As attackers compromise the security of hosts to launch DDoS attacks and use spoofing IP addresses, making it is difficult to trace the source of the attack.


Let’s not forget, that the Internet network consists of numerous hosts offering the attacker many options, from which vulnerable hosts are chosen. The main target of DDoS attacks are resources such as bandwidth, CPU, etc., and resources are limited on the network. If these resources are increased, the impact of the attack increases.


If these resources are increased, the impact of the attack can be reduced, but the resources will still be wasted, resulting in monetary losses.

DDoS attacks are increasing in the world of IT. The main types include bandwidth-based attacks and resource-based attacks. Both types of attacks consume the entire bandwidth and resources of the network that has been compromised.


This type of attack consumes the bandwidth of the victim or target system by flooding unwanted traffic to legitimate traffic from reaching the victim’s network. Tools such as DigiTurunc are typically used to detect these attacks and prevent the introduction of new attacks.


Attacks of the Resource exhaustion type:
The resource exhaustion DDoS attack aims to exhaust the resources of the victim system so that legitimate users are not served. The types of resource exhaustion attacks are as follows:

Protocol exploitation attacks:

An exploit is an attack that exploits vulnerabilities in applications, networks, operating systems, or hardware. Exploits generally take the form of software or code designed to take control of computers or steal data from the network. TCP SYN flood (a.k.a. SYN flood) attacks are the best example of this type. Other examples of protocol exploit attacks are the PUSH + ACK attack, the authentication server attack, and the CGI request attack.

EE Malformed packet attacks:

The term malformed packet refers to a packet containing malicious information or data. It occurs when malformed IP packets are sent to a target system, causing abnormal operation or system interruption. With the ability to defend against such attacks, a device can detect and discard malformed packets in real-time.


This can be done in two ways:

● IP address attack:

The malformed packet is wrapped with the same source and destination IP address, creating chaos in the victim’s operating system. This rapidly slows down and crashes the victim.

● IP packet options attack:

Each IP packet is composed of several optional data fields that contain additional information. Such an attack leverages these fields to produce a malformed packet. The optional fields are then filled in by resetting all qualities of service to one. In this manner, the victim will spend more time in processing the packet. This attack is more vulnerable when delivered by more than one zombie.

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