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If an attacker sends a large number of SYN requests with fake source addresses, the server side will consume a lot of resources to handle this semi-connection, and saving traversal will consume a lot of CPU time and memory, not to mention retrying SYN + ACK on IP in this list. TCP is a reliable protocol, and messages will be retransmitted at this time. The default number of retries is 5. The interval time of retries is doubled from 1s to 1s + 2s + 4s + 8s + 16s = 31s respectively. After the fifth time is sent out, it will take 32s to know that the fifth time has timed out, so the total is 31 + 32=63s.谢天书（刘之冰 饰）原本有一个三世同堂的幸福之家，妻子香雨（茹萍 饰）是中学老师，女儿笑笑（钟艺 饰）也到了要高考的年纪，一大家人生活的其乐融融。不料，天有不测风云，老父亲在自己八十寿宴上突发心梗辞世，顿时大喜变成大悲，就在一家人协商怎样照料孤寡老母（鲁园 饰）时，患有老年痴呆的母亲却突然走失，这下全家炸了锅，因为在此之前都不知老人患有这个病。老母独自一人走进离家几十公里的仙台山，口中喃喃念叨着早年失足的女儿天云，待找到母亲并送进医院后，医生的诊断令天书心生内疚。天书的二哥（吕晓禾 饰）家在农村，三姐（王丽云 饰）又患眼疾，天书与妻子商量准备独自一家承担起照顾母亲的责任……李敬文听了脸色发黑，脑中浮现那个自己玩水打湿了衣裳却赖到黑狗身上的小女娃。　　一向顺从的老伴儿开始质疑老林的能力。老林愤然决定变卖房产，去省城去与林欢一家同住，却与亲家母摩擦不断，让林欢小两口日子更加艰难。林雪夫妇追随老林来到省城，经济困境却让这一家人如坠深渊。林国威已带不动林家这辆大车，张勇生毅然扛起重任拉着一家老小百转千回的朝幸福一路狂奔……(3) There are more than six registered fire engineers, of whom at least three are first-class registered fire engineers;越南百合网剧喜剧《心动吧 小姐姐！》2019，夏微和小伙伴一起去面试新公司，新入职场的头一天，夏微碰上了一个可爱的小姐姐...知名女同剧情剧集《拉字至上》续集定名：《拉字至上：Q世代》(L Word: Generation Q)，并宣布今年秋季档开播，仍在Showtime。