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周夫子挑眉，开玩笑道：跟老朽同姓，难道是亲戚？众人又笑。要是临了到老了，还落个死在外边的下场，你们兄弟姊妹都要被人戳脊梁骨的。战术人偶们所编织的，在壮烈战斗的最后等待着的到底是……。你……啊——说了一半，他忽然发出一声凄厉的惨叫，惊得山谷中飞起好几只鸟儿。Let the winners of team a and team b play against team cWe 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.