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The SYN-Flood attack is currently the most common DDoS attack on the network, It is also the most classic denial of service attack. It takes advantage of a defect in the implementation of TCP protocol. By sending a large number of attack messages with forged source addresses to the ports where the network service is located, it may cause the half-open connection queue in the target server to be full, thus preventing other legitimate users from accessing. This kind of attack was discovered as early as 1996, but it still shows great vitality. Many operating systems, even firewalls and routers, cannot effectively defend against this kind of attack, and it is very difficult to trace it because it can easily forge the source address. Its packet characteristics are usually that the source sends a large number of SYN packets and lacks the last handshake ACK reply of the three handshakes.戚继光不禁吓得浑身发颤：我虽不与严党亲近，却也……从未得罪过严党。一边满含期盼地看着大苞谷，希望他点头。《国家机密2》人物设置上仍以国安干警与境外间谍智斗为主线，情节更加起伏跌宕，悬念重重。同时，在对人物的刻画上，避免人物概念化，特别是对间谍分子的刻画。和前部《国家机密》相比，《国家机密2》在剧本、拍摄以及后期制作上，都将力求表现反间谍工作的专业性。剧中借鉴、汇集了一些国内外反间谍工作中一些先进甚至具有科技含量的侦察手段，加之器材与道具的考究、场景与细节的真实，再现国内外反间谍战线的惊险与刺激。人气偶像威廉（陈伟霆 饰）为摆脱经纪人Gary（樊光耀 饰）的高压监控，躲藏在一间名为Double Sweet的甜品店，并成功逃脱了搜索。走投无路下，威廉请求甜品店店长nini（欧阳妮妮 饰）让他免费打工，并顺利成为甜品店的店员。Double Sweet每天都接待着各式各样对爱情感到困惑的客人，为解...决种种爱情难关，nini协同威廉制作出各样缤纷的可爱多创意甜品，在这过程中，威廉和nini的爱情渐渐开始萌芽。然而就在彼此心意都将揭开之际，经纪人Gary发现了威廉的踪迹，并将他强行带走。当nini觉得两人之间的那段甜品店邂逅已经结束时，威廉竟然在新片发布会的当天……上海姑娘丽鹃嫁给了一个大学毕业后留在上海工作的东北小伙子亚平。亚平在丈母娘家的帮助下，在上海买了房子成了家。亚平在父母来上海前是个上海标准的普通的丈夫，对老婆嘘寒问暖，端茶倒水，小夫妻亲密无间，恩爱无比。但婆婆到来后，温馨的小家生活开始发生质变。婆婆传统思想严重，希望以自己的生活方式去影响改造上海媳妇，这些思想与丽鹃现代的生活方式完全冲突，婆媳之间的矛盾与日俱增，摩擦不断升级，俩人变得水火不融……在亚平的父亲因病住院后，婆媳之间因为利益之争而彻底决裂，俩人变得水火不融。即使在丽鹃为亚平生下儿子之后，婆媳关系仍然没有得到缓解。小家伙的一句“妈妈坏”将家庭推到悬崖边缘。丽鹃因怒失言，将亚平母子逼上无家可归的境地，亚平在其妈妈的鼓动怂恿下，丧失了理智，疯狂地将拳头砸向了丽鹃……