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If an attacker sends SYN packets quickly with their own undisguised IP address, this is a so-called direct attack. This attack is very easy to implement because it does not involve spoofing or modifying packets below the user layer of the attacker's operating system. For example, he can simply send many TCP connection requests to implement this attack. However, for this attack to work, the attacker must also prevent his system from responding to SYN-ACK packets because of any ACK, RST, or ICMP (Internet? Control? Message? Protocol) will cause the server to skip the SYN-RECEIVED state (go to the next state) and remove the TCB (because the connection has been successfully established or recycled). Attackers can do this by setting firewall rules, causing the firewall to block all packets (except SYN) to reach the server, or causing the firewall to block all incoming packets so that SYN-ACK packets are discarded before reaching the local TCP handler.田立秋（谢贤 饰）、蔡凤（冯宝宝 饰）、叶一丛（林雪 饰）于60年代曾是让人闻风丧胆的杀手组织，无奈时代蜕变，三人只好脱下战衣，重归平凡生活。步入黄昏之年，谁愿意被标籤为负资产？凭藉一首电台点唱「青春之歌」，更让三人重燃心中的一团火(4) A sailboat.《龙珠风暴》是由陈鲁执导，黄晓明、陈宝国、宋春丽主演的奇异的“古装刑侦剧”，于2000年上映。该剧取材于一代女皇武则天与大唐名相狄仁杰的传奇故事。故事围绕稀世之宝龙珠隐藏着的一个鲜为人知的秘密，引发出一连串令人匪夷所思的稀奇案件若是经常对着那些狡诈奸佞的之辈，人心容易变得阴暗，这时候跟小孩子逗笑一番，心里就透亮了。流浪狗小七为报当年的救命之恩进入恩人欧叶所在的宠物度假村，却想不到欧叶早已经不记得小七。小七的“认主”行为给欧叶带来无穷无尽的麻烦，可在爱狗的度假村总裁戴维的压力下，欧叶又不得不试着与小七相处。小七因为欧叶对度假村搜救员鲍宇的追求生出嫉妒心，处处和鲍宇作对。在小七的努力下，欧叶终于记起它，并帮它实现了与宠物乐园“明星犬”边牧Mary同台表演的梦想。小七与鲍宇渐渐成为好朋友，鲍宇发现小七的搜救犬潜质，开始训练小七搜救。在小七的联系下，欧叶与鲍宇产生感情。一个国际水下文物盗窃集团欲盗捞度假村海域沉船中的文物，小七联合欧叶、鲍宇和宠物乐园的其他动物与住进度假村的盗贼斗智斗勇，成功挫败对方。小七加入搜救队，最终成长为一只优秀的搜救犬。