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首领不敢自作主张，请示道：少船主，这怎么搞？还不快放了。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.罗建平在射击俱乐部一呆就是十年，可是自从十年前拿了一次联赛冠军之后他便再没有亲近过冠军的奖杯――他总是打不好最后的一枪。主教练白昆意外地给他放假，并强迫他半年内不许再摸枪，原因是他这个爱徒实在太执着于射击，罗建平的生活中除了射击训练之外几乎是一片空白。被教练硬推出射击队之后，罗建平偶然遇到了小璇，小璇是个快乐单纯但是又刁钻任性的女孩，她对枪技高超但却缺乏生活常识的罗建平充满了兴趣。两个人在碰撞中产生了感情，罗建平在爱情中也体会到了教练白昆的苦心，他决定与小璇结婚，他要过一个正常人的生活，这个生活的另一个重心当然就是小璇。刘云是小璇的表姐，两人从小一起长大，姐妹感情深厚，刘云极其疼爱自己这个刁蛮任性的表妹，甚至于在自己的感情生活中也处处不离小璇的身影，也因此而导致了与男友许凡的分手。还没来得及从失恋中恢复过来的刘云又开始在表妹与罗建平的交往中倾注大量的精力，两姐妹总是那种怪怪的三角关系。俱乐部面临降级的危险――如果再不能夺冠的话。董事会因此而重金引进从国外回来的选手楚海楼，虽然主教练白昆极这一天武侠小说界不断撕逼，让付宇锋大呼过瘾。(4) A towing lamp is perpendicular to the top of the tail lamp;