欧美人与劲物胜行为

180. X.X.2The referee gave the command and blew the whistle to start.李天杨本来是一个性格开朗，充满阳光，秉持着中国传统美德的中国八零后青年。他高中毕业后留学德国，遇见了令人心动的德国女孩索尼娅。可是当他得知为了筹集自己的学费父亲积劳成疾后决定回到国内靠自己的努力帮助家庭渡过难关。在国内他发挥自己的能力，从打零工做起，一步步进取，不断实现着自我。看多了，她也懒得管，在哪都是一样过日子。In order to prepare a zero-based environment, we will empty the rules provided by default in centos6 so that we can carry out experiments and use the iptables-F INPUT command to empty the rules in the INPUT chain of the filter table. Later, we will summarize the relevant commands for clearing the rules separately, and there is no need to struggle with this command here.From the perspective of service, DDoS protection is essentially a war in which users are the main body and rely on anti-D protection systems to compete with hackers. In the whole process of data confrontation, service providers often have absolute initiative. Users can base on specific rules of anti-D system, such as traffic type, request frequency, packet characteristics, delay interval between normal services, etc. Based on these rules, users can better resist DDoS of the seven-layer class and reduce the resource overhead of the server on the premise of satisfying the normal service itself. The detailed schematic diagram is as follows: