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FC imported by oneselfHHThe main reason why DDOS attacks are difficult to defend is that there are too many vulnerabilities and attack methods that can be exploited. In the OSI seven-layer network model used in the network data transmission process, basically each layer has protocols that can be exploited by DDOS attacks. According to the different network levels of the protocols used for DDOS attacks, this paper summarizes the currently known DDOS attack types and their defense measures as shown in Table 1-3. For more detailed information on current DDOS attack and defense, please refer to Huawei DDOS attack and defense summary post.韩信淡淡笑道：这也算是一个好办法，不过做法太明显了，刘邦未必情愿。太阳活动异常，地球内部的能量平衡系统面临崩溃，人类将遭遇灭顶之灾。各国政府已经联手开始秘密制造方舟。以写科幻小说谋生的杰克逊在带孩子们到黄石公园渡周末时发生一连串怪事，而且遇到了神经兮兮的查理，查理告诉他世界末日即将来临。伴随着火山爆发，强烈地震以及海啸，杰克逊带领自己的家人驾驶一架临时租来的飞机冲出被死神阴霾瞬间笼罩的城市上空，开始寻找查理口中各国政府正在联合秘密制造的方舟First of all, in the idea of plane-oriented programming, the functions are divided into core business functions and peripheral functions.