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多大了？说婆家没有？我瞧你往哪躲？绿菠顿时又羞又笑起来，忙说她不跟奶奶住了，就住西厢。时间停了 LIVE版System.out.println ("before decorator! ");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.Before the match, lots will be drawn to determine the number of matches. The participants will tie up the ropes themselves. The referee will arrange the positions and supervise.