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2) Then check the status of the Local Connection. If the icon of the local connection is that two small computers flash and prompt "Connected", this means that the line from switch HUB to the computer is normal, the network card can basically work normally, and the inability to access the Internet is caused by improper operating system settings or software restrictions. Ping the remote host with the Ping command to see if the Ping can pass. If the Ping general rules indicate that the network connection is normal, then check the firewall settings and proxy server settings in the computer.(a) Strictly implement the medical security management regulations and agreements;The attacker first completes the three-way handshake to establish the connection, but in the last ACK reply of the three-way handshake, the TCP window size is set to 0, and then a data request is made. When the attack target sends the request result to the attacker, it stops the data transmission when it finds that the TCP window size is 0, and sends out a TCP window detection packet to ask the attacker if the TCP window has been updated. Since the attacker will not update the window size, the attack target will always maintain the TCP connection and wait for the data to be sent, and continuously carry out TCP window size detection. When the number of controlled hosts in the botnet is large, Target's connection table will gradually be exhausted, resulting in denial of service.Ctrl + K: hyperlink6. Delete Events板栗低头扫视周围，见无毒虫蛇蚁之类的东西。　　军管会社会部主任罗江，接到命令，迎接投诚的国民党第七集团军少将情报官何应农。何应农带来了《东北战区国防战略计划书》，也就是整个东北地区国民党军队的兵力部署以及战略计划。这份战略情报将决定整个东北战局的命运。