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12. Complete 10 killings of firearms division. Achievements jump out automatically. Ding Dong ~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.东林学院坐落在一个美丽的海滨城市。在这所学校里，聚集了本城大部分富商子弟，杜谦永则是这其中最出色的一个。他容颜绝美，气质冷傲，浑身弥漫着迷人的贵族气息，成为大多数东林学院女生的梦中情人。但他总是像高傲的王子一样，彬彬有礼却拒人于千里之外。远征决定回国了！一时间在二年和小夜以及大慈和小曼两家引起了"非常关注"，围绕着除夕之夜的年夜饭，两家人开始了一场嬉笑风波……故事的核心是强调"爱与真诚是战胜一切不幸的源泉"，戏中年夜饭的"新鲜"的吃法定会让现代人看后别有一番风味在心头。汤姆（詹姆斯·弗兰科 James Franco 饰）与安娜（凯特·哈德森 Kate Hudson 饰）是一对儿生活在伦敦的美国夫妇，受到金融风暴影响,生活陷入拮据困境。在即将面临被驱逐的紧要时刻，一笔“意外之财”从天而降。岂料私藏这笔钱没有想象中容易。在这背后竟然隐藏着一场连环黑吃黑的毒品交易和精心策划的复仇计划。黑帮老大，成瘾毒贩，资深警探，普通良民，每个人怀着不同的心思，绞尽脑汁、机关算尽，上演着谎言与谎言的明争暗斗。而为了独享这笔“横财”，真正头破血流的绝杀逃亡也拉开了序幕……赵文华工部出身，对于铳炮还是略知一二，此前鸟铳点火发射，总要一套笨重的流程，眼前这个手铳可神了，直接扣扳发射，省了不少事情，外加携带轻便，真如戚继光所说，天降神器。本剧讲述了，一个毫无农村生活和工作经验的宣传部小科员窦豆，被一纸调令转眼成了夏江村的“第一书记”。初到农村，窦豆屡屡受挫，更是与“不作为”村主任江重洋矛盾重重，两人因误会与偏见摩擦不断。但窦豆凭借一股热情与韧劲，誓要在夏江村做出点成绩来，在好友设计师赵晓玮的帮助下，夏江村渐渐焕发了全新的面貌。而科技特派员周莫也在窦豆的影响下用科技改变农民的命运。返乡青年江南因丈夫出轨毅然离婚，在窦豆的帮助下与旧爱杨树携手创业......窦豆的到来给夏江村创造一个又一个奇迹，这让江重洋也渐渐被窦豆的魅力所感染，积极投入到一件件振兴乡村的工作中，村两委渐渐成为有凝聚力和战斗力的班子。最终，夏江村在窦豆的带领下成为建设新农村的一张名片享誉全国。