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Foam extinguishingThis 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.中情局特工阿什顿·艾维（Ashton Ivy）于11月返回美国，带走了他对玛丽娜的爱，同时帮助俄罗斯保护其自然财富。Leonard(Johnny Galecki 饰)和Sheldon（Jim Parsons 饰）是一对合起来智商超过360的疯狂科学家宅男。他们的科学家朋友还有风流的Wolowitz（Simon Helberg 饰）和从来不和女人说话的印度人。最近，科学家宅男的对门搬来一个美女剧作家兼餐厅招待，Penny（Kaley Cuoco 饰）。宅男开始蠢蠢欲动了，于是诸多啼笑皆非的故事在几个朋友间“爆炸”开来。漳河岸边，一个执戟郎来回跑动，不断叫喊着同一句话。