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20. State ModeIn order to use SYN? Cookies to calculate the SYN-ACK serial number (that is, SYN? Cookies), the host must first combine some local password bits, a data structure including IP address and TCP port number, SYN initial sequence number, and some index data identifying the password bits. An MD5 digest is generated on top of all the above bytes, and then some bits are truncated from the hash value to put it into the SYN-ACK sequence number. Since the size of the sequence number is about a quarter of the total hash value, this truncation is necessary, but usually at least 3 bytes of hash bits are used for verification, which means that there are still nearly 2 24 possibilities to guess and verify cookies without knowing the password bits. In order to send out the hash value, some bits of cookies will reduce the upper limit value of MSS (Maximum Segment Length) contained in SYN and affect the index bits that identify the native password bits in the hash value.电视剧景德镇讲述明朝初年景德镇大窑头张天三及其父兄、同行烧窑制瓷的传奇故事。该剧以主人公张天三既特立独行又复杂坎坷的一生为线索，展示他们在烧制奇瓷奇器上的种种磨难和追求。除张天三及其几个同辈人之外，还表现张家第一代人、刻板固执的张泽昌，张天三大哥、舍身忘我的张天一，定瓷传人、行为怪异的“瓷怪”胡老九，严谨真诚、状如童稚的鉴古大师颜步一，厌恶官场、聪明绝伦的仿古高手周丹泉，以及皇室后裔、古董商司马逊等的迥异性格、傲然气节。　　克里斯不但面对着失忆的苦恼，如今还要应付这个棘手的计划，把人生的掌握权夺回自己手中。再说这一回，郑昊娶不娶得上媳妇，跟皇上有什么关系？他求皇上了，皇上这么热心地要把侄女塞给他？永平帝算是听明白了：这是在说他狗拿耗子——多管闲事呢。