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Recommended stars:The 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.由中央广播电视总台影视剧纪录片中心出品、央视纪录国际传媒有限公司承制的大型航拍纪录片《航拍中国》第三季即将在中央广播电视总台重磅推出。我们将一同飞越，如歌的山河。按捺住心情，肖亮翻开第二章。见秦嘉表情有异，刀疤脸不失时机地进言道：刘季之前在沛县起兵，一直都自大独立。BBC正式续订新喜剧#Ghosts##鬼屋欢乐送#第二季。This standard is proposed by the General Administration of Civil Aviation of China.