并提供各种排行榜信息。

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.李南恩是个小镇姑娘，大学毕业后到了法国波尔多大学学习建筑学，并阴差阳错进入了“高级动物研究社”。此研究社正在开发一套具有跨时代意义的生态建筑系统名为“空中花园”，而研究社的灵魂人物周尔文是一个学霸，致力于研究生态环保和建筑的融合。两人互是对方眼中的冷血鳄鱼和恼人鸟，成为欢喜冤家，总是高木在一旁当和事佬。经过一段时间的相处和磨合，他们发现各自的理论共通融合以后对“空中花园”有极大益处。毕业后，社员们归国创业，过程中遇到了重重阻碍，但他们越战越勇，通过所学理论，结合国内环境，因地制宜，最后获得巨大成功。这一吼过后，滩边如同被捣的蚂蚁窝一般，十几人放下手中的一切。2. Simulate virtual CD/DVD-ROM/HD DVD and Blu-ray drives. Wizard Virtual CD-ROM Concise Edition enables you to imitate up to 4 CD/DVD with the same computer. Virtual drives will be shown in your operating system as if they were real. Select a virtual drive and then select the CD image you want to install. Find the virtual CD-ROM drive that has been created with the CD image on My Computer and you can start working. It is like using a real drive, but it is faster!故事起源于一夜的错误，白富美女主和富商男主同时在各自的婚礼上被抛弃.他俩必须联手假结婚，然后互相解决一系列问题，患难生情，信任和真心使他们经受住重重考验。