Published on February 15th, 2014 📆 | 5504 Views ⚑1
400Gbps NTP-based DDOS attack hits CloudFlare – largest DDOS attack in History
NTP protocol is UDP-based protocol runs on port 123 which is used by Internet connected computers to set clocks accurately. A system will synchronize with the server and receives the current time.
Experts says this protocol is prone to amplification attacks because it will response to the packets with spoofed source IP address “and because at least one of its built in commands will send a long reply to a short request. That makes it ideal as a DDoS tool.”
List of open NTP servers on the Internet allows attackers to launch Denial of attack against any target network.