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Attack Details: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.石距危机解除后，SSR班迎来了新伙伴，显得更加热闹了起来。而此时适逢百鬼幼儿园举办的春日祭，玉藻前和妖刀姬摆摊卖起了章鱼丸，阎魔、判官和小黑小白兄弟搭起了鬼屋，然而全校最红火的当属SR班的弈同学，他开的竞猜让全校师生输光了小妖怪却又欲罢不能。但在此时，有个饥寒交迫的身影倒在了校门口，发现情况的同学们都热心的对他伸出援手，可是这个孩子出现后发生的种种事件，为他的身世带来了重重的谜团......Netflix过去宣布制作一部新职场喜剧《太空部队 Space Force》，由Greg Daniels及Steve Carell联手主创，后者担当主演。这部剧背景是美国总统Donald Trump在18年表示要成立第6军种，专门应付太空特种部队任务，而剧集就是以喜剧方式讲述一群被指派成立此部队的人。 主演除Steve Carell外还包括John Malkovich﹑Ben Schwartz﹑Diana Silvers 及Tawny Newsome。如今的秋叶原正被《超级战队系列》和《二次元新娘学园Z-Cune葵》两大作品平分人气，以两部作品的人物为基础，战队咖啡厅秘密基地的店长叶加濑博世开发出新英雄的装备。其后，叶加濑将Z-Cune葵外型的手办变身器交给三名持有“妄想力”的男女，让他们组成非公认战队秋叶原连者，阻止邪团法人密商乙的阴谋。听她这么一说，两老汉就猛点头。周勃将军，撤军已经撤离了，我们要不要立即率军追上去。