SYN attack is a kind of DOS attack. It takes advantage of TCP protocol defects and consumes CPU and memory resources by sending a large number of semi-connection requests. SYN attacks can not only affect hosts, but also harm network systems such as routers and firewalls. In fact, SYN attacks can be implemented as long as these systems turn on TCP services no matter what systems are targeted. As can be seen from the above figure, the server receives the connection request (syn=j), adds this information to the unconnected queue, and sends the request packet to the client (syn=k, ack=j+1), then enters the SYN_RECV state. When the server does not receive an acknowledgement packet from the client, it retransmits the request packet and does not delete this entry from the non-connection queue until the timeout. With IP spoofing, SYN attacks can achieve good results, Typically, clients forge a large number of non-existent IP addresses in a short period of time, SYN packets are continuously sent to the server, and the server replies to the confirmation packets and waits for the confirmation of the customer. Since the source address does not exist, the server needs to continuously resend until it timeout. These forged SYN packets will occupy the unconnected queue for a long time, normal SYN requests will be discarded, the target system will run slowly, and in serious cases, the network will be blocked or even the system will be paralyzed.
(Update on January 13, 2018)
高、矮黑衣人的行动标志“梅花胸针”在打劫富家子弟李刚的过程中，高个黑衣人将行动标志“梅花胸针”遗失，被捡垃圾的犀利哥大麦捡到，大麦将这枚“梅花胸针”卖到饰品店，存在侥幸与碰运气的大麦去彩票店买彩票一搏运气。
他对住持十分恭敬，却丝毫不知王爷为何物，因此根本没像对住持那样对板栗。
也好，这火够玄武王和白虎公忙一阵子的了。
照片
BBC One及HBO合拍8集剧《杰克绅士 Gentleman Jack》（前名《Shibden Hall》）由Sally Wainwright负责，美方现定于美国时间4月22日首播，英方会较晚播出。
影片是根据谢尔盖·卢科扬涅科(Sergei Lukyanenko)的三部曲(守夜人，守日人，黄昏使者)中的第二部《守日人》拍摄录制的。
楚汉全面战争即将打响，尹旭收拾心情，现在也该全力以赴，逐鹿天下了。
赵文华瞪眼呆住，这是预料中最美好的结果，他想也不敢想的结果，竟然真的实现了。
传说宿世情缘是轮回转世的凄美见证，前世未了缘，今世有缘便能再续。一块丝布将命运相连的众人牢牢束缚，前尘往事缓缓流转，娓娓细述人世爱痴贪嗔……
兰顿和优莱卡的旅程将在哪里结束？
19年前关于伯曼入室谋杀案的两篇调查报道，让时任《纽约时报》记者波碧·帕内尔（屋大维娅·斯宾塞 饰）声名大噪。现如今面对受害人女儿证词受人教导的新证据，主持热门真实罪案播客的她良心难泯决定重启调查——当年17岁入狱服刑至今的沃伦·凯夫（亚伦·保罗 饰）到底是否真如其母所说的那样清白无辜蒙冤受过？
相传在上古时期，盘古开天地时留下一颗五彩神珠。神珠吸取天地之精华，有神奇的力量，得到了这个宝物，就可以长生不老，甚至可以统领各界，称霸世间。为了防止神珠落到坏人手里，为害世间，五彩神珠被藏在乌笼院的一处禁地中，由武林高手世代守护。几千年过去了，直到这一天，乌笼院被牵扯到一桩宝藏抢夺与武林恩怨当中。
A few days later, he began to get tired of writing articles from the clues he had written at the beginning. His aim is to be able to write his own articles, not to copy them.
上回大典发的羊皮靴子倒不错，软和的很，样式又好看，我都舍不得穿。
听过此言，只见一浓须壮年愤而起身：末将胡光愿往。
他本身战国时期楚国贵族，在反秦之战之中因为攻取南郡有功，才被项羽册封为临江王，都城在江水之畔的江陵。
Source: http://www.sohu.com/a/210022275_171270
