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ACK reflection attack is a common reflection attack technique, Using TCP three-way handshake, When the source IP address of SYN is disguised as Target's IP and the transmitter try to establish TCP connection, the reflector's response will be directly forwarded to Target. In the process of attack, a large number of ACK responses responded by the reflector will be sent to Target by controlling a large number of controlled hosts to perform the clock operation, thus occupying Target's network bandwidth resources and causing denial of service.Invoice Description: Electronic invoice (general invoice) will be issued by default and sent to e-mail within about 1 month.他心里清楚，刘邦或许存了用虞姬做人质威胁自己的打算。而且还是为了那个粮官韩信，莫非是韩信得罪了萧丞相？看那家伙似乎还有些能耐，怎地这么不识趣，竟然得罪萧丞相，以后还怎么在汉国混下去呢？校尉担忧韩信的命运的时候，更加在乎自己，不敢怠慢萧丞相，急忙回答道：禀丞相，那会韩信回来之后，带了些随身的物品便离开了，有人看到他是往西去的……往西？走了多久了？萧何急忙追问。　　《遍地黄金》：2003年沙士时期，大时代下三个小市民的发达白日梦。三人常胡扯投资大计，妄想一夜致富。一番进退争论后，总是错失发达机会。