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Compared with the distributed denial of service attack that directly forges the source address, the reflection attack is more difficult to trace the source of the attack due to the addition of a reflection step. However, this is not the real threat of the reflection attack, and the real threat lies in the amplification attack using the reflection principle.The full name of UDP protocol is user datagram protocol. It is used to process data packets like TCP protocol in the network and is a connectionless protocol. In the OSI model, the fourth layer, the transport layer, is the next layer above the IP protocol. UDP has the disadvantages of not providing packet grouping, assembling and sorting packets, that is, when the message is sent, it is impossible to know whether it arrives safely and completely.讲述了一名女子遭遇交通车祸导致灵魂脱壳而出，必须要在49天时间里找到3个真心为自己流泪的人才能复活的故事。时尚网站总编赵一闻，对女性很不好。被他甩掉的女友陈瑶扬言报复他，给他造成杨舟神情兴奋，眼神发光，凝神看着电脑屏幕，旁人看着他的表情，还以为他在浏览什么好孩子不该看的内容。Key points: Collect seedlings locally. Don't listen to other people's better artificial reproduction. In the second year, those in your pond will reproduce themselves. This is the so-called artificial reproduction. In the second year, the survival rate is high. In the adapted environment, the seedlings will not die if the original pond grows. In this way, the seedlings will save a sum of money.《神探夏洛克》（Sherlock）2016年推出特别篇，福尔摩斯回归原著维多利亚时代，调查一宗神秘的幽灵新娘谋杀案。Thomas Ricoletti惊讶地发现，几小时前自杀身亡的妻子Emelia Ricoletti身着旧婚纱再次出现了，她的幽灵带着强烈的复仇欲望在街上徘徊。从迷雾笼罩的莱姆豪斯到被废弃的教堂深处，福尔摩斯、华生以及他们的朋友不得不想尽办法对付这个“从坟墓里爬出来”的敌人，但最终的真相却出乎所有人的意料……