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At present, what methods do we take to solve the attack? The first method shortens the waiting time and deletes the illegal request data packets waiting in the waiting queue as soon as possible. The second method is that the first handshake message is not put into the waiting queue. We return a 32-bit unsigned integer to the client as the Seq of the second handshake. The integer is obtained by adding a serial number of the server to the parameters requested by the user (including the requested address, port, etc.). If it is a normal user, it adds 1 as ACK after receiving this integer and returns it to the server. After receiving the data, the server subtracts 1 from this ACK and then performs inverse operation to obtain various parameters. Finally, the data sent out are compared. If they are completely consistent, it means that it is an effective response and stored in the corresponding data structure, otherwise it is not. Through this method, illegal requests cannot occupy system resources.FORWARD rules can exist in: Mangle table, filter table.果然，人一批一批地进去，根本没老百姓的份，实在太多了。心理医生罗威与未婚妻姚雨薇因在火锅店外接到一个奇怪电话而逃过火锅店爆炸。免于死亡的他们却身陷随后的一系列奇异死亡事件中。随着罗威一步步的调查揭秘，他发现死亡的源头竟然是自己在一家书店买了一个奇怪的笔记本，当罗威再次陷入诡异爆炸事件中时，他突然醒来，发现自己被困在一间实验室里，更可怕的是他发现自己并不是罗威，所经历的一系列可怕事件，都是关于惩罚和自我救赎的死亡体验。箭镞毫不留情刺入那些刺头体内。只是，《倚天屠龙记之魔教教主》的持续火爆，让启明影视接下来要上映的那部电影变得有些尴尬。System_addr=d. Lookup ('system ', 'libc')