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The characteristics of the second stage also includeIf a service needs to be public-oriented, it needs to provide a user access interface. These interfaces just give hackers the opportunity to take advantage of them. For example, the TCP/IP protocol handshake defect can be used to consume the link resources of the server, The stateless mechanism of UDP protocol can be used to forge a large number of UDP data packets to block communication channels... It can be said that the world of the Internet has not lacked attack points exploited by DDoS since its birth, from TCP/IP protocol mechanism to CC, DNS and NTP reflection attacks, and what's more, it uses various application vulnerabilities to launch more advanced and accurate attacks.Heroic spirit gives gifts to others轻笑了一下，他找到青鸾公主藏身的罅隙，见她还昏迷着，立即明白先走的三个人是谁了。现在，我这条惊蛇出洞了。《副总统》是HBO推出的一部喜剧，镜头对准了一个虚构的美国副总统的办公室。前参议员Selina Meyer接受任命，担任美国副总统一职。然而这份工作与她想象中的完全不一样。该剧聚焦Meyer和她的团队，她们希望在任职期间有所作为，留下政绩，而不要受深陷华盛顿的政治游戏中。