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A fundamental and universal problem closely related to this aspect is related to the use of open DNS parser to launch DDoS attacks against Switzerland, an anti-spam organization. The open parser does not validate the IP address of the sender of the packet before sending back the DNS reply. Therefore, after the attacker deceives the victim's IP address, he can send a large amount of attack traffic to the victim, and the ratio of attack traffic to request traffic reaches 100: 1. DNS amplification attacks such as these have recently been used by hacker activists, blackmailers and blacklisted website hosts with great success.小娃儿记性好，多教几遍就记得了。乍一听，很冷酷霸道，但其实就是一冷一热两个小朋友互不相让的斗嘴。20,000 Yuan "Out of Control" Reporter Ma Xiaotian Peng Jieyun Editor Peng Jieyun4 Easily implement revocation and redo of requests狐妖小红娘总篇集，自古人妖生死恋，千里孽缘一线牵！敬文娘拍手道：这法子好。