What is Distributed Denial of Service

Distributed denial of service (DDoS) is a category of malicious cyber-attacks that hackers or cybercriminals employ in order to make an online service, network resource or host machine unavailable to its intended users on the Internet. Targets of DDoS attacks are flooded with thousands or millions of superfluous requests, overwhelming the machine and its supporting resources. DDoS attacks are distinct from conventional denial of service incidents in that they originate from distributed or multiple sources or IP addresses. To get a sense of the enormous scope of the DDoS threat, the Check Point ThreatCloud Live Cyber Threat Map provides a global window into malware activity, providing a DDoS attacks map where exploits can be viewed in real time.

• DDoS Protect Pro provides protection against complex and volume-based DDoS attacks
• Three protection modules for the most extensive cover possible
• Cloud Web: from the cloud for local and hosted systems
• Backbone: in the Telekom backbone for Internet access
• On Premises: on the customer's premises for the local infrastructure
• Coupling Backbone and On Premises protection ensures that volume-based DDoS attacks are automatically mitigated

An application layer attack is sometimes referred to as a layer-7 DDoS attack (in reference to the 7th layer of the OSI model). The goal of these attacks is to exhaust the resources of the victim, by targeting the layer where web pages are generated on the server and delivered to the visitors in response to HTTP requests (that is, the application layer). Layer-7 attacks are challenging, because the traffic can be difficult to identify as malicious.
More Info: how to fix ddos attacks