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In a tcp connection, Rst means reset, which is used to close the connection in case of abnormality. When the sending end sends rst message to close the connection again, it does not need to wait for all the datagrams in the buffer to be sent out, but will directly discard the data in the buffer and send rst message. Similarly, after receiving the rst message, the receiving end will empty the buffer and close the connection, and does not need to send ack message for confirmation.For spoofing attacks, the first thing to consider is to choose the address. For the attack to succeed, the host on the spoofed IP address must not respond to any SYN-ACK packets sent to them. A very simple method that an attacker can use is to disguise only one source IP address, and this IP address will not respond to SYN-ACK packets, perhaps because there is no host on this IP address at all, or because some configuration has been made to the address or network properties of the host. Another option is to disguise many source addresses, and attackers will assume that hosts on some of these disguised addresses will not respond to SYN-ACK packets. To implement this method, you need to recycle the addresses on the list of source IP addresses that the server wants to connect to, or make the same modifications to hosts in a subnet.Magic Sword Bearo编辑卢绾事先派出的探子可是有些作用的。年轻女子蚊子(常方源饰)在高速公路被不明人士跟踪、追打并遭遇车祸，被富二代驾车撞击，不治身亡，最终在财权压力下案件私了。然而警官秦枫(朱亚文饰)以及神秘人物童明松(祖峰饰)却在案发现场发现了可疑的蛛丝马迹，觉出案件的蹊跷。陆洁(郝蕾饰)与乔永照(秦昊饰)是一对令人艳羡的夫妻，家庭美满育有一女，并经营着一家公司，衣食无忧。陆洁因为女儿在幼儿园的玩伴宇航小朋友结识了其母亲桑琪(齐溪饰)，却在与其交往的过程中偶然发现了丈夫的外遇，然而在之后的跟踪与调查中，陆洁发现这一切并非偶然，丈夫乔永照与桑琪有着绝非寻常的关系。面对突如其来的家庭变故，陆洁心灰意冷，开始实施一系列计划；而秦枫和童明松将陆洁定为了案件嫌疑人……在民国初年，在偏僻落后的村落 — 平安谷内，男尊女卑的封建思想下，女人一直被男人欺压。一对受了西方思想薰陶的夫妻，返回平安谷，想改变、建设家乡，可惜遇到新旧思想的冲击，困难重重，还被卷入神秘的幽灵新娘杀人事件、绑架及凶杀案中，原来背后有一班被男权压迫、欺凌的女子，她们暗中结盟，进行复仇行动。