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Suppose the attacker is in an "interconnected" network (e.g. An Autonomous system? System), whose ISP restricts the input and output filtering of the attacker's network traffic, will be able to prevent this spoofing attack-if this method can be deployed to the correct location by the organization. This defense method of traffic input and output filtering will restrict some legitimate communications, such as the mobile IP triangular routing operation mode, so it cannot be widely deployed. IP Security Protocol (IPsec) also provides an excellent way to resist spoofing packets, but this protocol cannot be used due to deployment restrictions. Since it is usually impossible for the server side to require the ISP of the link initiator to implement address filtering or require it to use IP security protocols, more complex solutions are needed to resist this spoofing attack disguised as multiple addresses, which will be discussed later.入学倍率10～20倍，不仅是学科考试，身体·运动机能检查等资质也被问的窄门。3. When a ship has any doubts about the existence of such a situation, the ship shall assume that such a situation does exist and take corresponding actions.由著名女笑匠Amy Poehler联手\"The Office\" 的 Michael Schur制作的喜剧《parks and recreation》已经昂首迈进了它的第五季。此片依然采用纪录片的拍摄手法，记录发生在虚拟的印第安纳州小镇Pawnee，公园与游憩部门里发生的 种种趣事。我们的Leslie Knope (Amy Poehler)，上季末她还是公园与游憩部门的副部长,如今已荣誉晋升为Pawnee的市议员了。这一季故事线有着多种悬念，比如我们的Leslie(Amy)和她的Nerd男朋友Ben Wyatt（Adam Scott）的远距离恋爱能坚持下去吗？Leslie史上最酷的前BOSS Ron Swanson（Nick Offerman）能迎来爱情的第“三”春吗？在本剧中，O’Brien应邀成为美国国家安全局的新智库，组建起一个「蝎子」团队来应对现代社会复杂的高科技威胁。他招募了一群在社会上不合群但是极其聪明的天才来帮助自己：Toby Curtis（Eddie Kaye Thomas）是一个行为学专家，能够轻易看透任何人的内心世界。Happy Quinn（Jadyn Wong）是一个机械专家，能够组装任何东西，而且同时具有外科手术般的精确度和魔术师般的非凡速度。Sylvester Dodd（Ari Stidham）是一个统计学大师，但时不时地会出现强迫症。联邦探员Cabe Gallo（Robert Patrick）负责召集「蝎子」团队并利用他们广泛的科技知识来解决令人挠头的危机。Gallo之所以对这个团队感兴趣是因为他曾和O’Brien打过交道，只不过……那不是一段值得他们回忆的历史。　　在宁静的丹麦小镇，一名17岁的少女和朋友们都发现了隐藏在他们小镇的令人不安的真相，她的世界因此而彻底颠覆。