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An attacker initiates a DDoS attack:This knowledge lets you know what is good about the design pattern.People have studied SYN attack prevention technology earlier. To sum up, there are mainly two categories, one is through firewall, router and other filter gateway protection, the other is through strengthening TCP/IP protocol stack protection. However, it must be clear that SYN attacks cannot be completely prevented. What we have done is to reduce the harm of SYN attacks as much as possible unless TCP protocol is redesigned.(3) Double check lock8. Plan implementation: It is suggested that the Company hold a meeting to assign tasks and complete indicators to various departments, so as to formulate department plans, implement the headcount, follow up the completion and include the completion in the assessment, so as to effectively achieve the purpose of improving work efficiency.3 Kisaki的Sugoroku Hironobu Nomura中村梓