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(未完待续……) show_style();。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.我才觉得运气呢，碰见他们，其实也没吃多少苦。“5·12”汶川地震忽然来袭，重灾区银杉镇凤凰村与外界的通道被震毁，几成一座孤村。若是就这样算了，徐家忍气吞声的臭名就好四处传播，徐家将会何等的丢人……将会成为越国之内大的家族之间的笑柄，这对尊严和面子也是巨大的伤害。