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　　随着一纸命令的到达，这种短暂的平静很快被打破了。On the one hand, the core components of the network infrastructure have never changed in the past ten years, which makes some discovered and exploited vulnerabilities and some mature attack tools have a long life cycle and are still valid even today. On the other hand, the rapid development of the application of the Internet seven-layer model has diversified the attack targets of DDoS. From the web to DNS, from the three-layer network to the seven-layer application, from the protocol stack to the application App, the endless new products have also given hackers more opportunities and breakthrough points. Moreover, DDoS protection is a project with unequal technology and cost. Often, the construction cost of a business's DDoS defense system is larger than the cost or benefit of the business itself, which makes many start-up companies or small Internet companies unwilling to make more investment.4 冰冷的女人"It's also our little Charlie's credit!"李敬文年轻力壮，就算小舅子不见了，也不能推脱说伤心病倒，只能向兵部告假，出城去帮着找。若是此事能成，张家和胡家化干戈为玉帛，必将传为佳话。再说了，黎章对于他，也不是什么异己，不过是为了卖老将军一个面子罢了。