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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.《爆笑先森》是一部为互联网而生的碎片化式喜剧，每集由多个片段组成，剧中男主角崔志佳有千变万化的职业和身份，经历了各种爆笑故事。江湖小馆中，大侠路见不平，拔刀相助，引发江湖的一场血雨腥风；被困在孤岛的一群“野人”，与世隔绝，上演一幕另类的荒岛求生记；战火纷飞的前线，士兵们为了完成受伤战士的最后一个心愿，前赴后继；加勒比海盗船上，独眼船长想起了当年自己的“英勇事迹”……豪华别墅发现一个漂亮女孩的尸体，刑警队长郭子健带队赶到现场。经查证：死者何小雨，新婚；令其致命的凶器是家中的刀具一把，没有丢失财物，也没有盗窃和打斗迹象。人人看到她丈夫五友安不久前与小雨发生激烈冲突然，五友安无法证明案发时不在现场，成为重要嫌疑人。小雨的尸体报告揭示出令人震惊的事实。死者是经过变性手术之后由男人变成女性，而且生前曾遭遇性侵犯......也不知这孩子是自己跑了，还是让人贩子给拐跑了。竟还受他的降？？？我们投降的时候怎不见他们手软？杨长帆心情也不怎么好。原黑帮老大的女儿胡家琳因遭二当家韩朗袭击而入院，原警察先身为胜联一员的韦峻轩一直守护在家琳旁，照顾家琳并苦苦向家琳道歉，家琳出院后，终于接受峻轩，两人结婚。韩朗扶持峻轩上位成为胜联老大，但仍背后控制峻轩。峻轩刚刚上位就遭到暗杀，韩朗留峻轩看管胜联，自己只身前往泰国欲打通中港所有运毒路线，却在泰国遭到仇家伏击被抓，不料在囚室竟遇到了被抓到泰国的子弹，子弹欲杀韩朗，却因正义感而下不了手。两人被关押而一筹莫展之际，被一神秘人救出，这神秘人竟是子弹女友陈玥琪！原来之前子弹和玥琪陷入危机，要被处决时，洛威并未杀死玥琪，而是把玥琪藏了起来，等机会让子弹和玥琪团聚，玥琪得知子弹被劫至泰国，不顾一切前来救援。子弹决心麻痹韩朗，提出和韩朗和解，两人协力重整了泰国黑道势力，返回香港。前女警因为正义被解雇，受到国安局赏识，卧底黑手党，清除余孽…