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二更求粉。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"Adapter pattern of the class: When you want to convert a class into a class that meets another new interface, you can use the adapter pattern of the class to create a new class, inherit the original class, and implement the new interface.空手入白刃其实非常凶险，一般只有在实力相差巨大的情况下，才可能成功，但是现在，张无忌一边抱着美人，一边在峨眉派掌门灭绝师太手中，夺下了天下锋锐第一的倚天剑。经过多年的奔逃，少女金妮和母亲乔琪雅渴望安定下来。然而，乔琪雅过去的秘密却危及她们的这番努力。The landlord here. . . Yes, for a long time.