Abstract. This article outlines a study of current approaches to defending against Distributed Denial of Service (DDoS) attacks. DDoS attack is a fairly popular type of attack to restrict the availability of Internet services and resources. A DDos attack can come from anywhere on the network and usually overwhelm the victim’s server by sending a huge number of packets. As of early 2020, there are many approaches to defending against this type of attack. This article will review the latest innovations in protection against DDOS attacks. It also describes the practical experience accumulated by the authors of this article.

Keywords: Distributed denial of service, DDoS – attack, computer networks, information security, Internet services, DBMS servers, business continuity, intrusion identification system.