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Compared with SYN cache method, SYN? Cookies technology does not need to allocate space at all when receiving a SYN. Because the most basic data that make up the connection state are encoded and compressed into the sequence number bits of SYN-ACK. For a legitimate connection, the server will receive an ACK message segment with a serial number (actually the serial number has been added by 1), then the basic TCB data will be regenerated, and a complete TCB will confirm that the data will be safely instantiated through decompression. This decompression can be successful even under severe attacks, because there is no storage load at all on the host side, only the load that calculates the encoded data into the ACK sequence number. The disadvantage is that not all TCB data can be added to the 32-bit sequence number segment, so some TCP options required for high performance cannot be encoded. Another problem is that such SYN-ACK message segments will not be forwarded (because forwarding requires complete state data).一直以来，尼基（丹尼尔·布鲁赫 Daniel Brühl 饰）和詹姆斯（克里斯·海姆斯沃斯 Chris Hemsworth 饰）都是针锋相对的死对头。尼基认真严肃，对赛车的职业十分尊重，詹姆斯喜欢铤而走险，将赛车作为自己寻花问柳的筹码，虽然两人有着截然不同的个性，但他们之间的较量却从未停止过。 　　为了改变自己不够成熟的性格，詹姆斯和偶然遇见的名模苏西（奥利维亚·王尔德 Olivia Wilde 饰）结婚了，尼基亦找到了自己的一生挚爱并且加入了法拉利车队，而此时生活已经走上了下坡路的詹姆斯则加入了麦克拉伦车队，一对冤家再次站在了人生的战场之上。一次比赛中，天降大雨，尼基出了车祸身受重伤，詹姆斯因此夺得了冠军。可是，尼基并没有因此而放弃，在极短的时间内，尽管受到了众人的制止，但他依然毅然地回到了赛场上。南瓜忙谢过四妹妹费心。CBS于凌晨公布了2012年秋季时间档期表。CBS最值得关注的变化为：星期一的旗舰剧集《好汉两个半》（Two And A Half Men）被移动到星期四与另一部旗舰剧集《生活大爆炸》（The Big Bang Theory）作伴Political Examination of Public Security Specialty Enrollment in Public Security Colleges and Universities你既然来了，那就知道该怎么做？说话间长剑出鞘，横在范依兰的粉颈之前。