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Half-connection survival time: refers to the longest survival time of entries in the half-connection queue, that is, the longest time from receiving SYN packet to confirming that this message is invalid. This time value is the sum of the longest waiting time of all retransmission request packets. Sometimes we also call the half connection survival time Timeout time and SYN_RECV survival time.
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.
便纳闷地问道：解释啥？众人都无语。
他的大师兄——二十岁的少僧Jung-sim虽然住在寺院多年，但每对着一见钟情的女子，仍闯不过情关而动了色心，并且打算还俗。寺院的主持面对两名僧人，不知如何是好……
今日你率军西进，本将军也要将这四字授予你，切莫让本将军失望。
李晓涵（刘诗诗 饰）是渔村公认的靓妞，她在岛上经营着一家旅馆，虽说出身卑微家境一般，但她内心却很阳光，憧憬未来能过上幸福的生活。富家公子医师安杰罗（明道 饰）奉母（田淼 饰）之命上岛从事改建工程，他入住到晓涵的旅馆，接下来他每天与人洽谈购置土地业务，由于此事不属他所学专长，一连几次均碰壁而归，晓涵问明原因主动相帮，事情很快发生了转机，安杰罗由原先对她的感激逐渐变成了爱慕。杰罗的母亲坚决反对两人交往，认为门不当户不对，这让杰罗十分痛苦，而顾全大局的晓涵决定从岛上消失。杰罗放不下这段纯真的爱，他发疯般寻找心爱的晓涵，在见到心上人的一瞬间，危险突然降临.....
和范增商议过后立即谋划实施，一场yīn谋已经展开，将许多人牵连其中……饥寒交迫的秦军唯一一点奢求，便是每日的一碗热汤，和一堆篝火借此暖暖身子。
江湖夜店，原本是一间坐落于偏远小镇的普通客栈。然而突然有一天，随着书生易水寒的到来，客栈尘封已久的神秘面纱也随之揭开。尘封多年的许愿神斧重现神光！ 获得神器的客栈掌柜思远道，本想借神斧之力振兴客栈，获得丰厚回报，却想不到所谓的神斧竟只是个极不靠谱的糊涂仙。 于是一段段嬉笑怒骂由此展开，一场场悲欢离合在这里上演，而客栈里的青年男女们，也正用青春和激情演绎着或温情或搞怪，或荒诞或动人的精彩人生！
总部位于芝加哥的USR公司开发出了更先进的NS-5型超能机器人，然而就在新产品上市前夕，机器人的创造者阿尔弗莱德•朗宁博士却在公司内离奇自杀。
(Mist, twigs, sky clouds, trinity, etc.) White word damage is real damage, ignoring defensive attacks. Generally speaking, the bonus is less and the bonus to combat power is less. However, attacks with white character bonus can be accumulated, and they can be added directly when accumulated. (Note that the higher the damage power of white characters, the more obvious it is. )
未来世界，科技高度发达，但人类早已无心身边美丽的点点滴滴，甚至不惜予以破坏。某天，政府军队闯入某神秘组织的大厦。经过一番激战，终于将这群邪恶之徒消灭，并在仓库找到了长着一双美丽翅膀的天使。军人恰克和飞鸟眼睁睁看着天使被军方接走进行试验研究，这令他们心中闷闷不乐。经过一番准备，他们乔装打扮混入实验室，救出了失去自由的女孩，全力以赴将她送回自由的天地……
A5.2 Recruitment of medical history, evaluation of examination methods and results, and identification of diseases
彩虹色子弹《彩虹芭蕾》的演唱会和与压力无缘的纯粹享受高尔夫的“天真无邪的暴君”，葵。
电影讲述了退休军官老丁(洪金宝饰)因“健忘症”弄丢孙女，内疚回到老家。邻居小女孩春花(陈沛妍 饰)成为他的慰藉。可女孩的父亲(刘德华饰)无意卷入了当地黑帮团伙的争斗中。老丁为营救春花挺身而出，也寻回那份作为军人的骄傲和弥补作为爷爷的过错。
该剧是讲述青春男女不惜献上自己人生的全部投身危险的爱情的20岁诱惑罗曼史，以法国小说《危险关系》为雏形而创作。
For example, the company's year-end bonus is assessed according to the employee's salary and performance. For those with performance A, the year-end bonus is 4 times the salary, for those with performance B, the year-end bonus is 3 times the salary, and for those with performance C, the year-end bonus is 2 times the salary. Now we use the general coding method to write the code as follows:
