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1. First handshake: Establish connection. The client sends a connection request message segment, setting the SYN position as 1 and the Sequence Number as x; Then, the client enters the SYN_SEND state and waits for confirmation from the server.正是实施严政非常紧要的时候，三大省巡抚这么撂挑子是找死么？他们其实真不是找死，是寻活。因喝了忘情水来到来到人间的龙太子玉龙和同样而来的蚌女明珠，又一次相遇、想爱。为了救明珠的性命，玉龙历经万难，客服一切困难，最后他们的爱情战胜了一切，二人化为山、水相守，表现了爱情与信仰的永恒。How should we defend against this attack? First of all, as users, we try our best to download APP from regular channels and surf the Internet in a civilized manner, and try our best not to make broilers. Secondly, as a service manufacturer, when the server is attacked by DDoS, we try our best to improve the processing capacity of the server. When the processing capacity of our server is greater than that of the attacker, these attacks are nothing to the server. Finally, under normal circumstances, the processing capacity of our server is generally lower than that of the attacker. In view of this situation, there are currently the following methods: 1. Violent methods, such as setting an access frequency threshold, and rejecting when the number of accesses per IP unit time exceeds this threshold; For a certain service, if the instantaneous request is too large, choose to directly refuse to ensure the normal operation of other services; This method may result in normal users not being able to use it. 2. Verification code. In order to prevent normal users from being injured by exposure methods, at present, service providers will send verification codes to "users" when receiving a large number of requests. If it is a real user, it will input verification codes, but if it is a broiler, it will not. Through this method, the real user and the broiler will be distinguished.苏角知道这只是一个开始，一场胜利并没有让他高兴过头，乘胜追击是必须的。这部电视剧的主人公是8个男高中生。他们全体学生都在男生的魔类通称“野郎组”。8个人接近女生，为了交到女朋友，团结一致努力的故事每回主人公都会改变，作为一集完结的学园爆笑喜剧来呈现！