What is a DDoS attack?
What will be an ideal response?
A distributed denial-of-service (DDoS) attack is launched against a host from multiple servers or workstations. In a DDoS attack, a network could be flooded with literally billions of packets; typically, each participant in the attack contributes only a few of the total number of packets. If one server bombards an attacked server with hundreds or even thousands of packets, available network bandwidth could drop to the point that legitimate users notice a performance degradation or loss of speed. Now imagine 1000 servers or even 10,000 servers involved, with each server sending several thousand IP packets to the attacked server. There you have it: a DDoS attack. Keep in mind that participants in the attack often aren't aware their computers are taking part in the attack. They, too, have been attacked by the culprit.
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