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In 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.出身贫苦的马天明遭陷害卷入一桩灭门惨案，逃亡过程中意外顶替了留洋医生蔡里昆的身份藏身于衡山医院。李副将跪在地上，一五一十地说出自己的遭遇。徽王府部署安排火炮之时，奇尔潘辛戈驻军使者早早前来，他们至少想搞清楚几个哲学问题，你是谁，你从哪里来，你为什么来，你要干什么，你知道我是谁么？杨长帆对此早有准备，送上了一份早已用西语写好的信件给使者，告诉他，拿着这个去见墨西哥总督，其它的都不重要，立刻去，不然你会死的。　　英姿被上司误以为飞车而被调到陈小生（欧阳震华 饰）所带领的特遣队，小生与英姿都觉得对方是自己的克星，常常斗气。后来英姿在失意的时候得到了小生的多番安慰，渐渐培养出了感情，但此时父亲英雄却嫌弃小生比英姿大很多而反对这段恋情，两人的关系进退两难……First, what is content-based products