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龙阳君所言，联合河北诸侯是非常重要的计策，魏豹当即点头道：好的，君上，我会尽快联络河北诸侯，游说他们一同防备汉国。CurrentIndex the index of the element being processed in the array徐风最喜欢看实习生因为什么都不懂就盲目崇拜的眼神，大笑着问：高端吧？一直沉默地坐在徐风身侧的男人，淡淡地开了口：真不明白为什么因为这个就能破格连提三级。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.众少年醒悟过来。