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TCP state depletion attacks attempt to consume connection state tables that exist in many infrastructure components, such as load balancers, firewalls, and application servers themselves. For example, the firewall must analyze each packet to determine whether the packet is a discrete connection, the existence of an existing connection, or the end of an existing connection. Similarly, intrusion prevention systems must track status to implement signature-based packet detection and stateful protocol analysis. These devices and other stateful devices-including the equalizer-are frequently compromised by session floods or connection attacks. For example, a Sockstress attack can quickly flood the firewall's state table by opening a socket to populate the connection table.Rosmarinus officinalis一次意外，何之洲为救沈熹被巨型广告牌砸伤生死未卜。沈熹意外的发现了一片镜子碎片能够带她回到过去，抵达何之洲出意外前的时间节点，她这次选择与何之洲在一起， 两人高甜秀恩爱终于修成正果。与此同时，沈熹为了防止何之洲发生意外做出种种努力，不料意外还是发生了。而沈熹也因为种种宇宙规律回到了两年后，发现一切比曾经还不堪，她一次次尝试改变，在不同时空结界的何之洲虽然性格没变，身份却一直在改变着，是他，却也不是他，可无论如何，何之洲总是命中注定一般的爱上沈熹，沈熹幸福之余，只想让何之洲活下去，跟他一辈子幸福下去。沈熹渐渐发现从始至终都有神秘人在暗处捣鬼，而何之洲的死竟然也都是他一手安排，沈熹全力抵抗，不论如何都想要改写历史，然而所有的一切都无法改变。歼灭了这些有生力量，是对刘邦的巨大的消耗，他的兵力将会大大下降，以后就不足为虑了。小葱微微一笑，问道：嬷嬷可想让儿子来身边照应？于嬷嬷听了大喜，站起身朝着小葱作揖道：若是能这样，那可真是太好了。This is the basis of the opening and closing principle, and the specific content: interface-oriented programming, relying on abstraction rather than concreteness. When a specific class is used when writing code, it does not interact with the specific class, but interacts with the upper interface of the specific class.The above is only a model of "Long En" bicycle, If you need to generate other types of bicycles, Other subclasses can be written. The most important advantage of factory mode is that some of the same methods can be implemented. We can write code in the parent class for these same methods. If we need to implement specific business logic, we can rewrite the parent class's methods in the subclass to implement our own business logic. In terms of professional terms, there are two points: First, weaken the coupling between objects and prevent code duplication. Instantiating a class in a method eliminates repetitive code. Second: Repetitive code can be written in the parent class. Subclasses inherit all member attributes and methods of the parent class. Subclasses only focus on implementing their own business logic.