What Is a DDoS Attack? A distributed denial-of-service (DDoS) attack is a coordinated strike, distributed among different computers, that aims to prevent the authorized use of one or more systems. These Web server have become a weapon of choice for malicious actors to conduct cyberattacks. They are used by different types of attackers, from experienced cybercriminals to the bored teenager. One of the assets that’s most often targeted by attackers is the public Web server of a victim. Although these servers might (and should) not hold that much sensitive or critical information, they are a target of choice because of their immediate public visibility and, consequently, the potential financial impact of an attack.

DDoS Attack detection and Prevention in Private Cloud Environment Shahanaz Begum I. Web server which is targeted by the DDoS Attack. Up to 1 Gbps DDoS protection included with every dedicated server. Options to block attacks up to 40 Gbps.

This article lists a number of protection mechanisms to defend against Web server DDoS attacks, more specifically those against Apache Web servers. Types of DDoS Attacks There are three types of DDoS attacks: • A volumetric attack, completed by overflowing the available bandwidth; • A traffic attack, done by abusing the available system resources; • An application attack, executed by exhausting the available system resources. Ecopy Pdf Pro Office Serial Number. Sometimes attackers will combine the different types of attack into one campaign.

One of the most observed attack types is a volumetric attack, especially one that is amplification-based. In an amplification attack, packets with a spoofed source address are sent to a vulnerable service.

This service will then reply with a much larger reply toward the spoofed address (the victim). Motivation for the Attacks Why do people conduct DDoS attacks?

This can be for various reasons, but essentially, whatever bothers the attacker can be enough to trigger an incident. The motivation can be political or ideological protest, blackmail, a smoke screen to hide other attacks, showing off technical skills or maybe just because someone is bored. Be Ready for Web Server DDoS Attacks There are a number of preventive measures you can take to be prepared for an attack, but you must realize that there is not always a proper defense against some large-scale strikes. Sometimes you just have to wait until the attacker loses interest and moves on to the next target.

What can you do to be prepared for a DDoS attack? It starts with a few best practices: • Understand your environment and prioritize your assets. • Apply best practices for the configuration of network devices, systems and services. • Monitor and log your networks, systems and services.

• Have a crisis communication and business continuity plan. When you design your incident response plan, you should also take into account how you have to interact with your ISP, service providers, CERTs and law enforcement agencies in the event of an attack. Setting up these communication channels and information exchange methods in advance allows you to focus on the core of the problem during an incident: incident handling. Attackers can start a volumetric attack against a website but can also issue an application or traffic attack. When dealing with the volumetric attack, the mitigation is most often done on a network level, whereas the application and traffic types have some mitigation on the Web-service level. Service Protection for Apache For one of the most popular Web servers, Apache, there are a few mitigation solutions available. About ModSecurity is an open-source Web application firewall.