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3. When pressing the power button (turning off the screen display).其实即便他是知道越国采用了飞鸽传书，短时间内也是模仿不来的。《刀剑封神录》才是最好的武侠小说We know that IPTables acts according to rules. Let's talk about rules. Rules are actually predefined conditions for network administrators. Rules are generally defined as "if the packet header meets such conditions, this packet will be processed in this way". The rules are stored in the packet filtering table in kernel space, specifying the source address, destination address, transport protocol (such as TCP, UDP, ICMP), service type (such as HTTP, FTP, and SMTP), and so on. When packets match the rule, iptables processes these packets according to the methods defined by the rule, such as accept, reject and drop. The main task of configuring a firewall is to add, modify, and delete these rules.然而某天她的丈夫突然离开了她，毫无预警的她需要尽快想出她的新出路；对其他人来说，由家庭主妇变成上单口秀，显然是个惊人的选择，但对米琪而言却并非如此。四少爷可认得？四少爷是花生，闻言把大苞谷上下一扫，疑惑地摇头。