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CB1, …If an attacker sends SYN packets quickly with their own undisguised IP address, this is a so-called direct attack. This attack is very easy to implement because it does not involve spoofing or modifying packets below the user layer of the attacker's operating system. For example, he can simply send many TCP connection requests to implement this attack. However, for this attack to work, the attacker must also prevent his system from responding to SYN-ACK packets because of any ACK, RST, or ICMP (Internet? Control? Message? Protocol) will cause the server to skip the SYN-RECEIVED state (go to the next state) and remove the TCB (because the connection has been successfully established or recycled). Attackers can do this by setting firewall rules, causing the firewall to block all packets (except SYN) to reach the server, or causing the firewall to block all incoming packets so that SYN-ACK packets are discarded before reaching the local TCP handler.This article focuses on the load event registered on the window object, that is, the window.onload event.在Nikita决心与组织对抗的时候，她遇到了一个吸毒的小女孩，并改变了小女孩的命运。黎章便亲自背起黎水，对钱明道：你带十人断后。1938年秋，日寇向皖南发动进攻，意图打开华中腹地。新四军支队司令谭俊和日军指挥官斋藤少将之间在繁昌战场展开了五次激烈的交战，我军既要抵御日军的正面进攻，又面临着身边卧底特务尚孟哲随时可能采取的致命性的破坏活动，经过谭俊和民运队长田敏等人的艰苦努力，和敌人斗智斗勇、以弱胜强，以五战五捷的结果取得最终胜利。具有高智商的斋藤少将使出百般招数却无法越雷池一步，最后被击毙在战场；特务尚孟哲也终于暴露被田敏抓住枪毙，谭俊和田敏这一对表面上并不般配的恋人，在经过战争的洗礼后萌发出真挚的情感，两人历经种种磨难，共同面对生死考验，冲破层层阻碍终成眷属。