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更何况他是户部的官员，领兵打仗这种事他并不比任何一个人专业。杜殇看到之后，心中一笑，看来这一趟并没有来错。楼上脑残粉无疑，我也喜欢天启的小说，但是不认为这款游戏值得期待。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.Student Dance -- 欅坂46本剧围绕1949年新中国诞生这一历史横断面展开，以民歌“东方红”作为此剧的主旋律，以众多历史事件、历史人物、历史冲突为重点，提炼出一个单纯而永恒的主题。