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Model/Framework Architect: Sorry, I don't understand, I won't write.SYN attack is a kind of DOS attack. It takes advantage of TCP protocol defects and consumes CPU and memory resources by sending a large number of semi-connection requests. SYN attacks can not only affect hosts, but also harm network systems such as routers and firewalls. In fact, SYN attacks can be implemented as long as these systems turn on TCP services no matter what systems are targeted. As can be seen from the above figure, the server receives the connection request (syn=j), adds this information to the unconnected queue, and sends the request packet to the client (syn=k, ack=j+1), then enters the SYN_RECV state. When the server does not receive an acknowledgement packet from the client, it retransmits the request packet and does not delete this entry from the non-connection queue until the timeout. With IP spoofing, SYN attacks can achieve good results, Typically, clients forge a large number of non-existent IP addresses in a short period of time, SYN packets are continuously sent to the server, and the server replies to the confirmation packets and waits for the confirmation of the customer. Since the source address does not exist, the server needs to continuously resend until it timeout. These forged SYN packets will occupy the unconnected queue for a long time, normal SYN requests will be discarded, the target system will run slowly, and in serious cases, the network will be blocked or even the system will be paralyzed.　　此剧讲述了女主被4位男生追求，逐渐成长的故事。《废柴联盟》是一部机智、生气昂然的喜剧片，一直名列最独出心裁的原创半小时电视节目榜首。这部喜剧围绕着一群紧密团结的朋友，他们遇到了可能是世界上最糟糕的教育机构---格林德尔社区大学。How can it be regarded as a malicious request? You can construct a local HTTP request, that is, an incomplete HTTP request.《快乐再出发》节目组针对快男们对自己团综的策划，结合实际预算“降级”处理， "凑”出一次圆梦之旅。边走边唱成固定项目，快男们将自主设计这迟到的15年的团综，在高度自由向度下，将如何把自己安排的明明白白，这注定是一场充满离谱和意外的爆笑之旅Some of the titles of each chapter in the original book are vague, so they are redrafted to make it clear at a glance. The translator is a layman in historiography, and the names of some secondary figures cannot be verified at the moment, so he has to be marked with transliteration for the time being. I hope experts will not hesitate to give advice. As for the crude translation, it is also hard to hide.