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在深邃的谜团面前，追寻答案。。。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.　　国中时期人称恶魔的凶狠男子船桥雅矢，想要脱离不良之道，享受校园时光，在就读高中之后，跟他的同伴山田一起加入茶道社！可是…留在他体内的不良之魂，会这么简单就消失不见吗？情感一直不如意的都市白领张小文（陈意涵 饰），因一次意外的时光逆转，穿越到古代变成了清朝的格格马尔泰若曦，张小文现代人的思维与生活习惯与身处古代的格格身份形成了巨大的反差，并引起了皇室的疑心。同时，聪明机智、阳光活泼的她更是得到了两位阿哥四爷胤禛（杨祐宁 饰）和十四爷胤禵（窦骁 饰）的倾爱，两人对若曦展开了风格迥然不同的爱的攻势，一个是唯我独尊、深情内敛的霸道总裁，一个是有求必应默默为爱守候的柔情骑士，上演了一段揪心、惊心又暖心的旷世三角恋情，在现在与未来之间，张小文究竟会情归何处……本来信心满满，意气风发地北上征伐，还梦想着夺回越国故地，真真正正称霸一方。The gangster immediately hit the captain on the head with an iron bar, chained him and threw him into the high seas. 　　有影响力的银行家马特维莱文（Matvey Levin）不遗余力地避免与私生子分享财富。但当他失去一切时，人们发现只有他们才能帮助他。为了恢复自己的财富，马特维将不得不在蒙特卡洛抢劫自己的银行。要做到这一点，他首先需要进行一项更具挑战性的行动：他必须重新获得疏远的孩子们的信任。