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But a few days later, cows had to eat grass and people had to eat. The life of the poor was more difficult than before. The poor man thought, "Why don't you sell the cow, buy some sheep, kill one for emergency first, and the rest can give birth to lambs. When the lambs grow up, they can sell them and make more money."If an attacker sends a large number of SYN requests with fake source addresses, the server side will consume a lot of resources to handle this semi-connection, and saving traversal will consume a lot of CPU time and memory, not to mention retrying SYN + ACK on IP in this list. The end result is that the server has no time to ignore the normal connection request-denial of service. If you look at the SYN_RECV status on the server with the netstat-an command, you can see that there are a large number of connection states that are "SYN_RECEIVED"塔科马FD的最新负责人特里·麦康基（Terry McConky）正在接受市议会的审查，以认真对待其电台的收视率。 同时，特里（Terry）的工作人员参与进来，使他的工作陷入危险。　　在这里，可以看到难以/curiouseCarved Saron Evil Iron Leg ArmorFinally, a Light.prototype.setState method is provided, through which the state object can switch the state of the light object. The switching rules of states are well defined in each state class in advance. No more conditional branch statements related to state switching can be found in Context: