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我该走了。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.售卖佛像的古董商人坎杰是个无神论者。他把佛像视为玩具，不明白那些花招百出的宗教仪式，希望把女儿培养成飞行员，把儿子培养成板球球员。古董店寄托着他全部的希望和感情。黄斌不好多说，敷衍过去。……第七式：破掌式。•瘋狂的愛（豐川悅司）Netease Cloud Security (Easy Shield) provides DDoS high-security services. Click to try them out free of charge.