Answer: DDoS is the abbreviate of English Distributed Denial Of Service, meaning namely “ is distributed reject to serve ” . You are OK so understand, the behaviour that always can cause lawful user to cannot visit normal network serve quite is reject to serve attack. That is to say, the purpose that rejects to serve attack is very clear, want to stop the lawful user visit to normal network resource namely, reach the goal of aggressor hidden thereby.
The lead plane that the attack strategy of DDoS emphasizes particularly on to had been inbreaked to may be used secondhand by aggressor at passing ”(of lead plane of corpse of a lot of “ ) send a large number of seeing to be like lawful network to wrap to fall victim lead plane, create network block thereby or server resource is extinct and bring about decline a service. Distributed reject to once be carried out,serve attack, attack network bag can is just as emerge to fall victim lead plane like the flood, flood the network bag of lawful user thereby, bring about lawful user to cannot visit the network resource of the server normally.
Whether did judgement website suffer flow attack is very simple, can check through Ping command, if discover Ping overtime or lose a bag serious (assuming is normal) at ordinary times, sufferred discharge attack possibly. The server that if discover the lead plane with you is received,goes up in same switching equipment right now also is visited not know clearly, can deciding basically was to suffer discharge attack.