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I still remember that the central idea of this text is to tell you that you can become a useful person through diligence, and that as long as you can study a skill for a long time, you will be able to master it and use it freely.The firewall sets the SYN forwarding timeout parameter (the firewall for state detection can be set in the state table), which is much less than the timeout time of the server. When the client sends the SYN packet and the server sends the acknowledgement packet (SYN + ACK), if the firewall has not received the acknowledgement packet (ACK) from the client by the time the counter expires, it sends the RST packet to the server to cause the server to delete the half connection from the queue. It is worth noting that the setting of gateway timeout parameters should not be too small or too large. If the setting of timeout parameters is too small, it will affect normal communication. If the setting is too large, it will also affect the effect of preventing SYN attacks. This parameter must be set according to the network application environment.咱们也出去跳绳吧，蹦蹦身上就暖和了。兄弟，你还是一起去吧，你这战法我可学不透啊。Three, two, a little fairyBefore 12:00 on June 28Example: