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.
In fact, each design pattern is a very important idea, which looks very familiar. In fact, it is because what we have learned is involved. Although sometimes we don't know it, it is actually reflected everywhere in Java's own design, such as AWT, JDBC, collection class, IO pipeline or Web framework, in which design patterns are everywhere. Because of our limited space, it is difficult to talk about every design pattern in great detail, but I will try my best to write down the meaning clearly in the limited space and space so as to make everyone understand better. If there is no accident in this chapter, it should be the last talk of the design pattern. First of all, it should be the figure at the beginning of the previous article:
甲午战争后的，1895乙未年间，在关东大地上，一群英雄儿女，为了中华民族，出演了一系列的悲壮的历史剧
Illustration of the incident
“握住我的手。”一个磁性的声音低语着。接着，他闭上眼睛。除了微微颤动的眼睑，你很难从他脸上看出正在他内心翻滚的惊涛骇浪。他说，他能带人走近幽冥的世界。有人说他的“天赋”与生俱来，有人说他不过是装神弄鬼。你尽可以叫他“鬼语者”“灵媒”或者“神棍”，也大可以要么五体投地要么呲之以鼻，但他，乔治·龙根，仿佛真有通灵的天分。
Track and Field
待问完，胡老大陪着小心道：求五少爷看顾些我家少爷，这秦大夫……洪霖冷冷地丢下一句话：秦大夫医术高明，你家少爷死不了。
那咱们这就走？走。
与怪兽们缠斗上百年的亚伯拉罕·范·海辛（吉姆·加菲根 Jim Gaffigan 配音），意图利用这次千载难逢的机会将死对头德古拉以及他的伙伴们一网打尽……
In any case, IT is an attractive business!
而一向刁蛮时髦的刘母便针锋相对，大骂林母恶俗，“裸婚”是当代时尚潮流，没什么不好，一起奋斗的人生方可珍惜。于是，双方父母针尖对麦芒的“裸婚”谈判轮番上演，最终不欢而散，林菲和刘洋也被折腾得疲惫不堪。
小萝莉？绿衣两只眼睛睁的大大的，茫然不知。
0.918
范阳辩士蒯彻。
A few days before going to the Death Experience Hall, Allie thought of death. The responsibility for the two children suppressed the idea of suicide. That's all she cares about.
《爬坡上坎》是一部反映现实生活的喜剧，剧中老崔担任一家制药厂厂长十几年，极不情愿地退休后，一个死了老公的职工家属迟明琼找他翻起陈年旧帐，硬说老崔要对自己老公的死负责，而真正令老崔心烦的，却是三个性格迥异的女儿的命运抑或生活问题。大女儿崔琪在一家美发厅当发型师，美发厅效益不好，换了老板，使崔琪陷入了从发型师“改行”按摩女的艰难抉择中……
胡指挥的伤不也是属下处理的么。
A4.2 Inspection Methods
