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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.依兰huā开了，自己的生日也该到了，往年的时候父母都会帮着张罗给自己庆祝，可是今年……彩儿想着小姐正是出生在依兰huā开的季节，所以才芳名依兰，小姐也最是喜欢依兰huā。Then we will write the Hero function. The code is as follows:2017-07-15 15:33:04Track and field is also the event with the most gold medals in the Olympics, so some people use the term "whoever wins track and field wins the world" to describe the position of track and field in the total number of gold medals in the Olympics.将军，打算了好了吗？此番还要继续给项羽卖命，给他死守彭城？彭越摇摇头：从项羽的诏令之中没看出他有回军的意思，只是让我死守彭城，让附近的萧公角率领周围的小股驻军前来支援。Button-Unrivaled Flurry