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The Spirit of Zodiac-TigerNow, let's imagine why these "checkpoints" are called "chains" in iptables. As we know, The purpose of a firewall is to match "rules" for passing messages, Then execute the corresponding Action, So, when the message passes through these checkpoints, You must match the rules on this level, However, there may be more than one rule on this level, But there are many rules, When we put these rules in a chain, A "chain" has been formed. Therefore, we imagine each "checkpoint" as shown in the following figure. In this way, it is more appropriate to call them "chain". Each message passing through this "checkpoint" must match all the rules on this "chain". If there are qualified rules, the corresponding actions of the rules will be executed.嗯，春耕已经临近。该剧以迷信为素材，讲述了盲目相信命运、迷信的女子申宝妮（黄正音 饰）因听信算命先生的“一定要和86年生属虎的处男过一夜”之后，对深陷数值、科学的工大男子齐休浩（柳俊烈 饰）展开无止境“扑虎”攻势的搞笑浪漫爱情故事。张家人都聚在院子里等消息。