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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.村中一霸“天狼”谢天啸和铁血打手“狗哥”王凯二人厮混长大，整日幻想着有朝一日能出去闯荡江湖。因为天啸遭遇家中变故，天啸和狗哥决定进城闯荡。初来城里，二人就被江湖骗子圈圈摆了一道，后三人不打不相识，结为伙伴，并在圈圈的帮助下走上了棒棒生涯。在做棒棒的同时，天啸和狗哥先后结识了老黄、小渝、祥叔、小阳等形形色色的人物，也在不经意间，天狗二人触碰到码头幕后老板龙二的利益并在几次冲突中与之结下梁子。天狗二人成长的同时，一场以码头为中心的江湖大风暴即将拉开序幕。故事描述普通女大学生Paige（Bella Thorne）参加一部好莱坞热门影片试镜，结果一鸣惊人，从此成为明星。她必须学会适应「星光灿烂」的新生活，同时处理好与剧组中两个男演员的关系。与此同时，她还要暗中调查一个著名流行歌手神秘失踪之谜。乾隆皇帝微服出巡路过十全县，在荷花塘邂逅陈青莲，生下一子陈文杰。魏贵妃担心自己的儿子永琰继承皇位会有潜在威胁，暗遣太监徐安到陈家除掉孩子。陈青云知道事关重大，把自己的儿子交出替死。乾隆的佛前替身了然方丈从徐安手中救下孩子，秘密带回京城护国寺抚养，连乾隆也被瞒住。陈青莲以为儿子已遭残杀，由爱转恨，离家出走学得武功，要找乾隆讨个说法。陈青云的妻子因痛失儿子投塘自尽，陈青云把她埋葬在荷花塘边，却以陈青莲的名义立了墓碑，以绝皇宫无尽的追杀。九年以后，陈青云以乡试解元的资格带着陈文杰进京会试，路遇劫匪，财物尽失。陈文杰装成双腿残废，爬着要饭供陈青云到京城。永琰化妆成破落子弟在民间历练，与讨饭的陈文杰发生冲突，九岁小和尚心远出街化缘遇上，以惊世骇俗的武功镇住永琰，同陈文杰相识。心远即是了然方丈当年抱回的陈青云儿子，武功超人，从乾隆留给陈青莲的爱情信物佛珠串上学会一百零七种绝顶神功，其中一颗佛珠有乾隆刻的“长春居上”四字，刻坏了微雕的水功秘笈，因此心远不会水、怕水。表兄弟不知彼此身世，一见投缘，学大人安妮·海瑟薇商谈参演[他最后想要的东西](The Last Thing He Wanted，暂译)。该片根据琼·迪迪恩1996年同名小说改编，迪·里斯([泥土之界])执导。影片故事讲述一位名叫埃琳娜•麦克马宏的记者放弃对1984年总统竞选活动的报道，而为了实现父亲的意愿，她决定报道伊朗毒品交易的新闻。本片已进入前期制作Zheng Haonan Spokesman: 650,000 Zhen Ni Spokesman Every Three Years: 500,000 Yuan per Year钟馗与孟婆守候的千年宿命之恋，原来两人前世还是凡人时，就曾有一段故事。孟婆的前世「小冰」因故与钟馗分离，两人转世成仙后，钟馗默默守护已经遗忘前世记忆的孟婆千年，一场地府爆炸意外，让两人有了再续前缘的可能。