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4-Above-ground HerbaIf an attacker sends SYN packets quickly with their own undisguised IP address, this is a so-called direct attack. This attack is very easy to implement because it does not involve spoofing or modifying packets below the user layer of the attacker's operating system. For example, he can simply send many TCP connection requests to implement this attack. However, for this attack to work, the attacker must also prevent his system from responding to SYN-ACK packets because of any ACK, RST, or ICMP (Internet? Control? Message? Protocol) will cause the server to skip the SYN-RECEIVED state (go to the next state) and remove the TCB (because the connection has been successfully established or recycled). Attackers can do this by setting firewall rules, causing the firewall to block all packets (except SYN) to reach the server, or causing the firewall to block all incoming packets so that SYN-ACK packets are discarded before reaching the local TCP handler.该剧讲述了天地之间唯一神魔混血的少年穆天然同伏羲后人杨仁执、人类除魔师凌兮、魔族圣女罂粟等周旋于人间与魔界之间，斩妖除恶，惊心动魄的热血历险故事。跟随两个疏远的兄弟姐妹回到他们曾经熟悉和热爱的大牧场。出身贫寒的草根女子唐澜意外救下高智商孤独症少年程月亮，两人自此成为亦师亦母的忘年之交，更因此与银楼少东刘传一和银行家程逸飞结缘。转眼至一九三七年，抗日战争全面爆发，唐澜携手月亮智救卷入日本人命案的桂花香，初露头角的月亮被二叔程逸翔视为夺产的绊脚石，欲除之而后快。唐澜因义捐之事被日军抓捕，众人全力营救，怎料丈夫传一反致逃难身亡，挚友逸飞亦中枪病危，程家岌岌可危。义字当头的新寡唐澜与逸飞假结婚守护程家，却不知亡夫传一竟以神秘身份归来；国难当头，月亮勇救数百上千难民逃过日本人的大范围搜捕，更深入敌军情报机关冒险拯救危难之中的父亲……在这场国仇家难的危机中，亲情友情爱情