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2. Second handshake: The server receives SYN message segment. When the server receives the SYN message segment from the client, it needs to confirm the SYN message segment and set the Acknowledge Number to x+1 (Sequence Number+1); At the same time, I also need to send SYN request information, setting SYN position to 1 and Sequence Number to y; The server side puts all the above information into a message segment (i.e. SYN + ACK message segment) and sends it to the client side. At this time, the server enters the SYN_RECV state.This is also the longest interview question in the interview. Of course, it is also personal work experience and reference to netizens' blog posts. If there are any mistakes, please criticize and correct them.这可能吗？周星河觉得不可能。手忙脚乱地收拾好桌子。1. Icmp/igmp flood attack (hping)But this is not over yet. Ethernet also requires CRC verification when transmitting data. The network card will CRC check the data packet before sending the data, attaching a 4-byte CRC value to the back of the packet header. At this time, the packet length is no longer 40 bytes, but 64 bytes, which is often referred to as SYN packet attack. The packet structure is as follows:本片主要表现：上世纪三十年代前后蒙古族传奇英雄嘎达梅林，为了保护草原与牧民，争取自由与幸福，奋起反抗达尔罕王公勾结腐朽的民国政府以“放垦”为名出卖草原，勇敢进行武装起义，最终为了草原牧民的幸福生活而献出了自己年轻生命，化为一首永世流传的美丽歌曲《嘎达梅林》…… 　　仲春时节，达尔罕王带着自己的新婚福晋朱博儒和二公子包明远，从盛京返回达尔罕王府。夜里，他们突然遭遇到马匪袭击，达王几乎落入死难。万急之中，是忠勇的骁骑卫――嘎达挽救了他的性命。然而，公子包明远却被马匪掠走了。嘎达不顾危险，单骑冲入黑暗，再去拯救包明远。 　　包明远已落入匪巢。匪首之一却是义士哈斯尔，他原本是达王府的杰出跤手，因为草场被王公放垦故而被迫落草为匪。匪巢中，嘎达冒名顶替，救出了包明远，自己却再次身受重伤。但没想到，哈斯尔却没杀他们，却向达王提出“免除赋税，停止放垦”等三个条件。表示：如果达王答应，他不但愿意放包公子一条生路，而且还会率众下山归顺。包明远大喜，口衔枪口立下重誓，答应了哈斯尔全部条件。返途中，包明远只顾自