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In TCP protocol, messages arriving at the destination will enter the buffer of the TCP stack and will not be forwarded to the receiving system until the buffer is full. This is to minimize the number of times the system empties the buffer. However, the sender can force the receiving system to clear the contents of the buffer by sending a TCP message with a PSH flag of 1. The TCP PUSH + ACK attack, like the TCP SYN attack, aims to deplete the resources of the victim system. When an attacker sends TCP messages with PSH and ACK flags set to 1 to the Target host, these messages will cause the Target system to clear all TCP buffers (whether the buffers are full or not) and respond with an acknowledgement message. If this process is performed by a large number of controlled hosts, the system will not be able to process normal data, resulting in denial of service.清末，沧州民间神医喜来乐因得罪朝廷权贵，被流放东北。时至庚子年八国联军入侵北京，喜来乐又被卷入时代的漩涡中。侵略者水土不服身染怪病，西医束手无策，喜来乐的死对头向洋鬼子举荐其当军医。CBS All Access续订《傲骨之战 The Good Fight》第二季。适逢事业上升期、生活奋斗期，田蓓蕾和郭一鸣这对在北京工作的小夫妻意外怀上了二胎，双方父母两处奔来，四个老人抛家舍业立志为儿孙当“北漂”。一个屋檐下，两地、三代、七口人上演起悲喜交加的家庭情感故事 。要强的田蓓蕾为前途孤注一掷丢了工作，独辟蹊径又柳暗花明；厚道的郭一鸣身受家里家外两重压力力撑梁柱，两人走到离婚的尽途又温情回归。四位老人为爱“斗法”，两度折返北京，又分别立足。一系列现实的问题如儿...延续第一季的故事　　翻江倒海的十里洋场，爱情也变的曲折凄迷……