The invention discloses a device of using intelligent switching of
multiple domain names for DDoS (Distributed Denial of Service)
attack defence. The device includes
a domain name acquisition module and a
timeout monitoring module disposed at a
client, and also includes an
attack monitoring device and an intelligent scheduling device disposed at a service end. The
domain name acquisition module acquires the at least two available domain names from an available
domain name pool of a service end intelligent scheduling device at an interval of time T, one thereof is used as a currently used
domain name, and the rest is used as an alternate domain name. The
timeout monitoring module monitors time when the
client issues a request to the service end. The
attack monitoring device carries out real-time monitoring, and determines
a domain name under an attack. The intelligent scheduling device schedules the domain name under the attack if the attack monitoring device detects the domain name under the attack. The device of using intelligent switching of the
multiple domain names for DDoS (Distributed Denial of Service) attack defence can paralyze an attacker in certain time, prolong time after which an attack is initiated thereby again, increase attack resource and cost consumption of the attacker, increase attack difficulty, reduce impacts caused by the attack, and thus achieve the purpose of defence against the DDoS attack.