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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).Gun 2.3Programming Class:大叔随着食堂的夜晚一起经历人来人往，满足食客们的味蕾，也见证了各式人生。而无论夜多深、路多远，大叔还会在食堂里继续倾 听大家的故事。Arranged by practicality:留苏归来的武越打算找位临时女朋友，以抗拒家长对自己的工作安排。不料阴差阳错，对漂亮的饭店服务员马小勤一见钟情而不可自拔，拍出六块六毛六买酒只为博红颜一笑，而小勤正在为没钱给老妈买寿礼犯愁。捡破烂的老妈那姑是格格出身，打小吃惯的嘴，时逢困难岁月，经常扒在稻香村橱窗前盯着点心呑口水。心酸的小勤受精豆唆使，打算借用这六块六毛六为老妈还愿，买套稻香村的小八件为其贺寿。尚未成行，早就对小勤秀色垂涎的李经理抓住六块六毛六当成贪污事件相威胁，强奸马小勤未遂，准备强令其下放到兴凯湖农场劳动改造。此时，武越继母王校长动员小勤的残废哥哥瘸二爷也去支援北大荒。武越为其打抱不平，和骂功卓绝、言语犀利、出手泼辣的那姑联手闹王府，竟结成忘年之交。那姑喜欢小伙子志向人品，有心给小勤撮合却遭女儿拒绝，武越亦遭到小勤男朋友臭子的抵毁与仇视。臭子对离开京城怀有恐惧感，却被指派下放兴凯湖当管理人员，他希望小勤能留在北京为自己将来返京留个门，不惜抛弃尊严叫马小勤向李经理低头。尹旭想起不觉有些内疚，此时的悲伤毫无做作，货真价实。