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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.In order to reach a rich level of green coloring,还好尹将军赢了。　　《邪恶力量》（Supernatural）由美国WB电视台制作，讲述灵异超自然现象大多来自于美国的都市传说和民间传说。5. Os.rmdir ()--Delete the specified directory徐家无疑就是个很好的选择，首先徐家也是山阴四大家族之一，影响十分广泛，而且还控制着江东一带的船运，在如今这争霸战争的年代里这可是极为有用的。Operating System: Windows 7/8/10