![]() ![]() ![]() The technique amplifies the size of a DDoS attack, but UDP is just one of several internet protocols that can be abused for amplification, including Domain Name System (DNS), and Network Time Protocol (NTP), and memcached. The attacker sends the spoofed UDP request to a middleman server, which sends a larger number of UDP response packets to the target's IP address rather than to the attacker's actual IP address. It is a graphical user interface (GUI) based tool. Like last year's huge DDoS attack, the attack vector in the 3.47 Tbps DDoS attack was a UDP "reflection attack", where UDP request and response packets are reflected within a local network using a source Internet Protocol (IP) address that's been spoofed by the attacker.Īn attacker abuses UDP by creating a valid UDP request that falsely lists a target's IP address as the UDP source IP address. XOIC is another DOS attack tool that has an IP address, a user-selected port, and a user-selected protocol. ![]() The DNS resolver processes each query, and then sends the information back to victim device who had its identity stolen. Using the forged identity, he will then send out countless DNS queries to an open DNS resolver. The largest attacks last year used the User Datagram Protocol (UDP), while attacks focusing on gaming servers were carried out using variants of the Mirai DDoS botnet malware, which relies on compromised PCs and Internet of Things (IoT) devices. The attacker will assume the identity of the victim by forging its IP address. ![]()
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