Several misunderstandings about DDoS

brief introduction ： Yes DDoS attack , Most people's cognition comes from news reports . The new article reports that this method is becoming popular DDoS Harmful colleagues , It will also unconsciously introduce some misunderstandings . for example , Attacks against internationally renowned enterprises have attracted more media attention , This leads many people to think that small and medium-sized websites will not suffer DDoS.

Yes DDoS attack , Most people's cognition comes from news reports . The new article reports that this method is becoming popular DDoS Harmful colleagues , It will also unconsciously introduce some misunderstandings . for example , Attacks against internationally renowned enterprises have attracted more media attention , This leads many people to think that small and medium-sized websites will not suffer DDoS. Besides , The number of attack traffic is often prominently displayed in reports , Remind readers of the seriousness of this attack , However, in fact, the size of the flow is not equal to the degree of harm . The following is a list about DDoS Common mistakes .


myth 1：DDOS Attacks are attacks that consume network bandwidth resources
A lot of times , We mentioned DDOS When the attack , It's all about “ How much attack traffic G even to the extent that T” To describe the intensity of the attack . This takes the bandwidth of attack traffic as DDOS Description Index of attack hazard degree , It usually makes people think DDOS Attacks are attacks that consume network bandwidth resources . in fact , In addition to network bandwidth resources ,DDOS There are also attack methods that consume system resources and application resources , And the size of attack traffic is only one aspect that determines the degree of attack harm . For similar attacks , Usually, the larger the attack traffic , The more harmful it is , If the attack traffic is the same , The harm and influence caused by different attack methods are also different . A lot of times , Everyone thought SYN Flood attacks consume network bandwidth resources DDOS One of the attacks , It's not , The main harm of this flood attack is to exhaust the resources of the system connection table .
myth 2：DDOS The attacks are all flood attacks
Generally, just mention DDOS attack , What people usually think of is UDP.SYN.RST Flood attack . So we think that DDOS An attack is a flood attack . in fact , The flood attack is just DDOS One of the attacks . In addition to the flood attack , Others are called slow attacks . Flood attacks are by sending large amounts of data and requests quickly , So as to quickly consume a lot of resources ; Slow attack is to send requests slowly and firmly and occupy target resources gradually for a long time .


myth 3： Cloud cleaning services and local mitigation devices can replace each other
DDOS It is a general term for various attack methods , Different attacks need different mitigation methods . General cloud cleaning services are mainly aimed at traffic DDOS attack , Adopt the method of dilution and shunt ; The local mitigation equipment can handle less traffic , It is suitable for fighting resource consumption and applying resource consumption DDOS attack . Everyone should choose the right solution according to their own business characteristics and major threats .