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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.张谢义有个漂亮的妻子和可爱的儿子。在张母的呵护下，日子过得有滋有味。不久，谢义下岗，遭妻子歧视。为保住有家庭，谢义任劳任怨，在母亲的帮助下做辣白菜自谋生路。谢义从没有钱到有钱，妻子从蛮横到体贴，谢义变了。金钱使他私欲膨胀，最后迫使母亲出走。黄浦江边，张母思绪万千，面对滚滚江水，她想得很多很多。德宏父亲观念陈旧，思前顾后，省吃俭用，对德宏的超前消费意识相当反感，时时教育德宏要艰苦朴素，常将有日思无日，莫到无时思有时。他对自己的生活十分抠苛，生了病也不去医院，说是浪费钱。肝炎渐渐转为肝癌，德宏及母亲到处借钱为他治病，但最终没能留住他德宏和母亲在收拾父亲的遗物时发现了父亲藏在床板下的四万五千元钱，母子俩痛不欲生。德顺在丈母娘家过着压抑的生活，为摆脱现状，回家与母亲吵着要房。当知父亲留下钱后，便变本加厉地索取。金宝发是个助人为乐的好心人，在父亲的影响下，常常为居民办事，自称“傻人有傻福”。偶然的机会他救了厂长，厂长欣赏他的勇敢，提拔他当了销售部经理。为把销售搞上去，在部下的劝说下，请客户吃饭，给在拳坛上亚虎唯一的愿望，就是能和拳坛冠军力王比较高下，亚虎终于向力王挑战，苦战十五回合，虎﹑力二人打得落花流水，始终未能分出谁胜谁负，在此情况下，亚虎及力王均重伤入院，亚虎因眼睛严重受伤，不能再打拳赛，若再打拳，可能影响视力，亚虎从此离开拳坛。此次拳赛在经济上对亚虎没有太大帮助，但令他声名大噪 ; 之后得到一笔小奖金，并分期付款买了一间屋和一部亚虎自小便心爱的电单车，本以为从此可以过平凡和无忧无虑的生活，不料当他们正过幸福的日子时，亚虎突觉视力减退，在工作上错事百出而被公司解雇，再去求职亦处处碰壁，此时小植已有身孕，在生活入不敷支的情况下，小植惟有回到原来的工作酒家工作，不幸操劳过度，受伤入院，亚虎因此重出拳坛。在一次拳赛中，因虎想念在医院中的小植而被打败，后来经过教练泰叔一番鼓励及指点，在医院的小植已苏醒起来，亚虎要挑战力王的消息植已得知，植唯有加以鼓励……曾经大学的风云人物，特例独行的赵晓棠，在校期间一直追求者不断。赵晓棠自己也非常出色，成绩优秀，申请了国外院校。在与慕海复合后，赵晓棠一心一意帮助慕海创业，放弃了出国深造。然而，两人结婚多年，彼此的矛盾越发明显。一出平民路线的奇幻故事就此展开,TV动画第二季，起动！！Zhang Weiguo, vice-chairman of the Hubei Provincial Committee of the Chinese People's Political Consultative Conference and secretary of Shiyan Municipal Committee, said that Shiyan City's number of tourists has increased by 25% since the second half of last year by participating in "Charming China City". During the Spring Festival in Wudang Mountain, there was a net increase of 50,000 tourists. "Charming China City" has discovered our own glittering golden light and helped our city put on a beautiful new outfit.