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I don't think I can finish writing. I ate a meal and came back to continue writing.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.王府的格格雪珂（刘雪华 饰）与下人亚蒙私奔，茫茫雪夜，这对恋人以天地为证结成夫妇。然而王府追兵很快到来把二人捉了回去，为求保住亚蒙性命，雪珂以死相逼，无奈，亚蒙被发配充军新疆，而已有身孕的雪珂诞下女儿后即被安排嫁给父亲世交的儿子罗志刚。　　　　当爱情面临金钱、地位的诱惑你是否还会紧守那一份最初的感动，当真爱面临世俗、自尊的挑战你是否愿意削去自己一半的棱角和爱人融成一个整体？