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The so-called core business, such as login, adding data and deleting data, is called core businessIf 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.杨长帆坐在他桌前，看着他认真读信，自己的心境好像也平和了许多，不再为前面那些推脱之辞心烦。该剧定位于悬疑爱情单元剧，由几个看似不相关的案件串联起来，揭露了人性的罪与恶。剧集中每个案件都相对独立又环环相扣互为因果，每个人都是加害者又是受害者，我的手是加害者的手，我的眼是受害者的眼。这是一场始于爱的杀戮，一场终于情的牺牲。在理性与逻辑的尽头，真相的背后让你不禁流泪。见赵锋皱眉思索，板栗咳嗽一声道：三叔，你瞧这事……你是不是该追上去，跟郡主解释一下？赵锋依旧发愣，不知想什么。Attacks directed at specific applications are generally covert, smaller in scale and more targeted.故事围绕在一个口号：“个男人终将被两个女人所奴役-老婆及丈母娘”