DDoS stands for Distributed Denial of Service.

What is a DDoS Attack?

DDoS is a malicious attack in an attempt to disrupt normal traffic for a targeted server, service or network by overwhelming the target or it’s surrounding infrastructure with a flood of internet traffic.

How Does a DDoS Attack Work?

A DDoS attack requires an attacker to gain control of a network of online machines in order to carry out the attack. Computers and other machines are then infected with malware turning each one into a bot. The attacker then has control over each bot, meaning they have control over each machine.

Once this has been established the attacker is then able to control the machines by sending updated instructions to them via a method of remote control. The IP address of the victim is targeted, with each bot responding by sending requests to the target. This could potentially cause the targeted server or network capacity to overflow, resulting in a denial of service to normal traffic.

What are Common Types of DDoS Attacks?

Different DDoS attacks target varying components of a network connection. Below are common types of DDoS attacks:

Application Layer Attacks

This is often referred to as a layer 7 DDoS attack. This is where the attacker will target where web pages are generated on the server and delivered in response to HTTP requests.

Layer 7 attacks can be difficult to defend as the traffic can be difficult to flag as malicious.

Protocol Attacks

Protocol attacks are also known as state-exhaustion attacks. These cause a service disruption by consuming all the available state table capacity of web application servers or intermediate resources like firewalls and load balancers.

These attacks ultilize weaknesses in layer 3 and layer 4 of the protocol stack to render the target inaccessible.

Volumetric Attacks

This type of attack attempts to create congestion by consuming all available bandwidth between the target and the larger internet. Large amounts of data are sent to a target by using a form of amplification or another means of creating massive traffic, such as requests from a botnet.

For more information on DDoS Attacks or how you can ensure your business is safe from them in the future with DDoS Protection get in touch today on 0203 488 5285 or emails hello@valiantit.co.uk to speak with a team member today.