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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).在斯德哥尔摩人的一生中，友谊、悲伤和浪漫与爱交织在一起。你我早该想到会有这一天。《黑镜》三则全新故事，6月5日隆重上线。我们的人？杨长帆自嘲笑道，有的时候，我自己都搞不清楚我们是正是邪了。赵炳斗（赵仁成 饰）是一个三流社团的小头目，家中有两个弟妹，母亲身体不好，生活困顿；他在社团里也混得不如意，老大不器重，净派一些当街打架、恐吓收债的小事情，本来应该他接手的游戏厅也被别人抢了功。