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该剧讲述了一位“法律上已宣布死亡”的前CIA特工，受雇于一位神秘的亿万富翁，打自主正义牌，用私人力量来打击犯罪保护人民。Judging from the previous attack methods, the execution of arbitrary code in Microsoft Office is often realized through macros. So, is there any other way to implement arbitrary code execution? The answer is yes. SensePost discovered a way to execute arbitrary code using DDE (Dynamic Data Exchange) protocol. There are many places in office products where code can be received and executed through DDE. In this article, I will demonstrate some common methods of such attacks. In addition, the payload for this article can be referred to in conjunction with DDE Payloads.In other words, when we enable the firewall function, the message needs to pass through the following checkpoints, that is to say, according to the actual situation, the message may pass through the "chain" differently. If the message needs to be forwarded, the message will not be sent to the user space through the input chain, but will be directly forwarded out through the forward chain and the postrouting chain in the kernel space.The attack uses the method of sending a large number of domain name resolution requests to the attacked server, Usually the domain name requested to be resolved is randomly generated or does not exist on the network. When the attacked DNS server receives the domain name resolution request, it will first look for whether there is a corresponding cache on the server. If it cannot be found and the domain name cannot be directly resolved by the server, the DNS server will recursively query the domain name information from its upper DNS server. The process of domain name resolution brings a great load to the server. If the number of domain name resolution requests exceeds a certain number per second, the DNS server will time out to resolve domain names.周菡看看秦淼，再看看自己，总觉得哪里不对劲。We felt enlivened by this unexpected output.