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DRDOS-Distributed Reflection Denial of Service (DRDOS-Distributed Reflection Denial of Service) is different from DoS and DDoS. This way relies on sending a large number of data packets with the victim's IP address to the attacking host, and then the attacking host makes a large number of responses to the IP address source to form a denial of service attack.Now, 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.娘，我也不是说不许纳侧妃，只是要问板栗的意思。娇躯颤巍巍地走了过来，一下子扑倒在刘邦的怀里，顿时哭的梨花带雨。The attack revenue of straight-line Batman is lower than that of parabolic Batman. Because the straight line will hit the Batman first, causing damage to overflow. The parabola will hit the Batman first.本片将讲述斯大林葬礼的“宏伟、恐怖且怪诞”的场面。这将是洛兹尼察最新的蒙太奇电影，基于档案影像，他将在今年晚些时候完工。他表示：“我一直在研究一部于1953年3月5日至8日拍摄的电影，这部电影导演包括谢尔盖·格拉西莫夫（Сергей Герасимов）和伊利亚·科帕林（Илья Копалин），但是电影在苏联政府内部观影过后就被禁了。直到90年代才重新被发现。”