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If 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.在青青草原世界，Proxy is an object, which can be used to control access to ontology objects. It implements the same interface as ontology objects. Proxy objects will pass all calling methods to ontology objects. The most basic form of the proxy mode is to control access, while the ontology object is responsible for executing the function or class of the assigned object. Simply speaking, the local object focuses on executing the code on the page, while the proxy controls when the local object is instantiated and used. We have used some proxy patterns in the above monomer patterns, that is, using proxy patterns to instantiate the monomer patterns, and leaving other things to ontology objects.(2) A hard replica of the international signal flag "A", the height of which shall not be less than 1 meter, and measures shall be taken to ensure that it can be seen around.此时，陈启和吕馨并肩坐着，各对着一个电脑屏幕。这是讲述一个母亲为了承诺而坚守一辈子的情感故事此为“善” 这是描写一个贫儿不弃诚信与关爱，最终成为商界名人的奋斗历程此为“行” 这是讴歌一群来自社会底层的百姓积极向上的乐观态度、敢爱敢恨的生活追求，并以此反衬少数有钱人纸醉金迷的腐朽之气此为“健”。　善行者健曾在奎塘村以收死猪、肠衣等废料熬猪油为生的陈家豪24年后拥有了自己的企业家家好连锁超市，陈家豪一跃成为当地的知名富人。同现如今大多数富豪一样，陈家豪决定进军房地产业，一来解决“农民暴发户”的身份，另一方面为自己在两个儿子中选择继承人。大儿子陈皓夫不学无术，二儿子陈皓天虽然独当一面，但却是续弦梅青所生。就在其大举进军南城商圈的时候，梁健出现了，他是妻子梅青与其前夫所生的女儿汪晓帆暗恋并生有一子的男人，他口口声声向陈家豪和梅青要自己和晓帆当年的孩子，否则将与陈家豪在商业上血拼到底。　被迫应战的陈家豪越发觉得力不从心，决定将自己的位子传给二儿子陈皓天，由此引起了轩然大波，一向不理企业经营的梅青对此意外地进行坚决阻拦，梅青讲出实情，陈皓天不是陈家黄夫人点点头，叹气道：平白的出这样事……老嬷嬷忙笑道：也不算坏事。