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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.张槐诚恳地说道：泥鳅好容易中了秀才，这不单是刘家的喜事，也是咱清南村的喜事。究竟，哪里出了问题？还有一个更无奈的疑问，究竟是谁干的？一万个邹应龙也没有这个本事。　　眼盲心亮的美女DJ晶晶坐地铁去电台，而工作陷入瓶颈的云翔也赶巧坐这班地铁回家。两人曾很多次同坐这班地铁，似乎就是被命运作弄，一直无法邂逅。偏偏这一天，一向冷酷的云翔却目睹有人抢了晶晶的皮包，他在扶住几乎要跌倒的晶晶时被这个清新脱俗的盲女给吸引住了。　　随着“中国共产党万岁”的低声欢呼，一个在日后改变中国、改变世界的政党产生了。石志康（陈庭威）适逢其会﹐得见两大高手蒋真（高雄）与聂万龙（秦沛）对赌﹐因而对赌产生兴趣。 真虽战胜龙﹐却反被龙冤枉出千﹐含冤而死。 一日﹐一青年蒋百祺（吕颂贤）光顾赌场﹐大胜一帮印尼老千。 原来祺乃真之子﹐想藉此吸引龙之注意﹐趁机接近龙为父报仇。 其后康得赌痴 的赌术﹐技术大进﹐祺遂说服康合资经营另一赌场。 为此龙之赌场生意大受打击﹐故龙为保王者之名﹐不惜放火烧赌场﹐祺不幸葬身火海﹐康悲愤不已﹐……尹旭刚刚才说过，外松内紧，看来你自己太过紧张，有些不够冷静了。