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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).这个垂暮老者可不简单，身为项羽身边第一谋士，有亚父之称的范增，岂可小觑。臭名昭著的撰稿人莫名死亡，在调查事件真相的过程中，警方一步步走入了黑客一手制造的陷阱之中。故事讲述在电机制造商子公司上班的和田理生（高杉真宙）周末会参加乐团，因为过份认真在人际关系方面很笨拙，不受女生欢迎，单身日子长达3000天。为了想被人夸奖，他每天都会做美味的饭，也执着于食材，更会和幻想的女友对话。每话都会有不同的女演员演主角的妄想女友。一个富庶家族的一家之主的去世引发疑云重重，随着黑暗秘密一个接一个地曝光，真相逐渐浮出水面。漫威影业荣誉出品《复仇者联盟4：终局之战》，故事发生在灭霸消灭宇宙一半的生灵并重创复仇者联盟之后，剩余的英雄被迫背水一战，为22部漫威电影写下传奇终章。