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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).臣的两位表弟素日也练习拳脚的，合力拽住了受伤惊窜的马儿，只撞翻了好几辆拉货的车。人气偶像组合“King&Prince”永濑廉主演的特别电视剧《FLY！ＢＯＹＳ，ＦＬＹ！我们开始CA了”决定于2019年秋天播出。这部作品讲述了以航空公司的空姐（以下简称CA）为目标成为训练生的主人公，与同事们一起通过各种各样的训练成长起来的故事，对永濑来说是第一次主演电视剧。他就是不服气，把几个农家娃子说得如此神奇。见此情景，范增怒不可遏，接过玉斗一把拍在几上，顺手从身边的侍卫腰间拔出宝剑，劈成两半。