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一个女人（卡特丽娜·洛）在她小时候时母亲就被谋杀，长大后回到她母亲去世前的房子。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.城南林记豆铺的千金叫林婉茹（俞小凡 饰）本来拥有安泰平和的生活，但是一场灾难过后却夺走了她所拥有的一切。如花似玉的女儿终堕泥沼中，令人扼腕叹息。在危难之初，盛昌木材行的少东家高明辉（谢祖武 饰）曾对婉茹施以援手，此番天上地下的两个人，彼此心中萌生纯洁的恋情。明辉有心为婉茹赎身，他的母亲却因有过类似的经历而对出身青楼的婉茹极端抵触，更希望儿子和青梅竹马的表妹锦凤成亲。雪上加霜的是，脏心烂肺的管家赵有良谋夺木行家业，于是使出百般花招中伤婉茹，层层下套。乃至让婉茹和明辉之间产生了误会。生于边疆长于沙场，天生神力武勇过人不拘小节的肃王殿下，满口糙话豪爽洒脱，世人都坚信其为大雍男子楷模真英雄也，其实是女儿身——她大龄未婚父母双亡，有马有房有小弟工作稳定有高薪，就差个如意夫君。In general, the order of click events is from parent to child, and then from child to parent.Chapter 5 Applying the Principle of Deliberate Practice in WorkEvent handler binding: