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Method: Graphic + Text Interpretation.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.记者贝茜·布鲁姆到监狱采访死刑犯大卫·戈尔。大卫曾是位受人尊敬的大学哲学教授，也是一名死刑的坚决反对者，但却因被控强奸和谋杀而面临死刑。 贝茜采访过程中对法庭的审判产生质疑，她决定亲自调查事情真相还大卫清白。原来，大卫的一名女学生曾表明“愿意做任何事”使自己期末成绩及格，但正直的大卫拒绝了她并间接导致女学生被退学。为此，女学生以强奸罪名起诉大卫。大卫虽然没有因此进监狱，但名誉尽毁，妻儿都离开了他。大卫终日酗酒。不久，朋友康丝坦斯·哈拉维遭人谋杀。种种证据对大卫极其不利，大卫被判谋杀判处死刑。贝茜历经千辛万苦终于查出了令人震惊的真相。2. Is it better to find a decoration company or to be private-shortcomings of the decoration company　　对于伤心欲绝的安娜（克里斯汀贝尔饰）来说，每天都乏善可陈。她端着酒杯，眺望窗外，看着与她无关的日子一天天过去。但当一名帅气的邻居（汤姆莱利饰）和他可爱的女儿（萨姆萨拉耶特饰）搬进街对面时，安娜开始看到隧道尽头的光亮。直到她目击了一场可怕的谋杀但事情真是这样吗？还有，那汪村的村姑死的也蹊跷……胡镇终于崩溃了，再也忍无可忍，嘶声叫道：那个女人吊死了怎么也算在老子头上？你这贱妇，敢胡乱攀扯人。《荣生茂风云》是由马绍惠,王雷导演， 由王超群,吴珊珊,温群茹等主演的内地电视剧，共18集