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This leads to an obvious potential DoS attack. Incoming SYN packets will be allocated too many TCB and the host's kernel memory will be exhausted. In order to avoid this memory depletion, the operating system usually associates a "backlog" queue parameter with the listening interface, which maintains both the upper TCB number of connections and the SYN-RECEIVED state. Although this scheme protects the host's available memory from attack, the backlog queue itself brings a (small) source of attack. When there is no space in the backlog, it is impossible to respond to new connection requests unless the TCB can be recycled or removed from the SYN-RECIEVE state.保护证人组督察许玮琛奉命保护受袭的名人乔江河，他是“商场魔术手”乔江山的胞弟。江河得罪了一名沈阳有势力人士熊飞，招致杀身之祸。于是警方建议江河接受保护证人组的保护，因此，玮琛认识了江河的侄女乔子琳。子琳性格怪僻，对人冷漠，甚至有点不近人情，玮琛和队员都认为子琳是被宠坏的富家千金。然而，玮琛目睹子琳面对父亲江山有着可爱的另一面，禁不住对子琳的性格产生疑问。熊飞特意来港和乔氏兄弟正式和解，可是期间发生枝节，最终江河重伤，一名路过的退休大法官却被流弹击毙。此时正在回家的子琳目睹一切，向警方指证熊飞开枪杀人，警方为保子琳安全，再次派出保护证人组保护子琳。在保护子琳的日子里，玮琛曾不顾危险，以身犯险救了子琳，连子琳视如命根的大提琴，玮琛也不顾一切力保不失，令子琳对玮琛留下特别的印象，开始留意这位保护自己的人Sound Card: DirectX Compatible Sound Card尹旭郑重道：嫂夫人和侄子，项兄不要担心。DDoS Attack and Defense: From Principle to Practice (Part I)-Bursts of rapid breathing and then interruption of breathing-this is the result of the reduced sensitivity of the respiratory center to blood carbon dioxide stimulation.故事讲述二十世纪初满清灭亡后军阀割据的动荡时局下，张卫健饰演的狄奇从一个力求独善其身的平凡小人物在恶势力压迫下奋起反抗的励志故事。此次为了拍摄新剧《大帅哥》，张卫健奉献其出道三十年来拍摄周期最长的诚意演出，他却坦诚表示自己最终决定回TVB拍摄新剧，是因为他 在做身体检查时觉得如果病人在病房中看到他的作品会感到快乐，能够因他的演出而暂时忘却病痛，会让自己觉得所有的一切都是值得的，因此义无反顾不计酬劳回巢拍戏。