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杨长帆感觉这段话信息量很大。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.The Spirit of Zodiac-Rabbit素贞（甄珍 饰）因嗜赌丈夫欠下大笔赌债后自杀身亡，而只得开设一家小花店独自抚养四个小孩。素贞有一男友俊富（柯俊雄 饰）为外洋船之高级船员，但碍于孩子的关系，无法成婚。老大至刚（吕良伟 饰）更受到爷爷挑唆，与母亲产生嫌隙……《七次的初吻》是由粉丝自制的网络剧，由赵丽颖、李易峰、鹿晗、杨洋、张艺兴、陈伟霆、陈学冬等共同主演。该剧主要讲述了一个刚毕业的普通女生陆笑笑（赵丽颖饰）与七位不同领域的男神发生的梦幻浪漫爱情故事。二十世纪九十年代，看似风平浪静的成都餐饮江湖，注定将有一场激烈纷争。代表了成都川菜最高境界的蓝亭菜蓝家大院，正面临着看不到的危险。爱，亲情，友谊；恨，阴谋，暗战……二十年前的一场孽缘，在恍若一梦之后的今天，使爱恨情仇得以延续……忧郁的丹麦王子面对生存的困惑而低吟，为着复仇本身的意义踌躇不决。今天，哈姆雷特式的悲剧要在他们的身上重演？这是一首唱给爱情的悲歌，然而爱情又哪里仅仅只有悲怆？谁会看到万花丛中最美丽的一束芙蓉正在暗自凋零？一个聪慧动人的生命香消玉殒？或许，生命的终结正是为了它的重生，又或者从容涅磐的绝不仅仅只是生命本身。