- A volumetric denial of service (DoS) attack using the User Datagram Protocol (UDP). A UDP flood attack can be initiated by sending a large number of UDP packets to random ports on a remote host. As a result, the distant host will check for the application listening at that port, find no application listening, and reply with an ICMP “Destination Unreachable” message. For a large number of UDP packets, the victimized system will be forced into sending many ICMP messages, eventually leading it to be unreachable by other clients. ← Wikipedia
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