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"In this way, given the situation at that time, it should be extremely unfavorable to the defense of position 149. So many giant" killer bees "besieged you. If not handled properly, it could even lead to complete annihilation. How did you tide over the difficulties at that time?"谁知功夫学的不到家，反把自己陷进去了。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.至于有人说，武侠剧不就是那样子，怎么新起来？对此，真正知道天启的人都会嗤之以鼻，《白发魔女传》小说还没有出来的时候，你们知道什么是新武侠吗？《笑傲江湖》还没有出来的时候，你知道武侠能这样吗？……时间一分一秒坚定不移的行走着，很快夜幕拉开，万家灯火亮起。甘联珠(秦萍 饰)与桂武(王羽 饰)夫妇，为救被困僧人与妇女而闯进红莲寺，联珠不慎踏中机关遭擒，危急中强迫桂武冲出回家求救。甘氏全家前往寻仇，误触寺内机关，死伤惨重……也不要整天抱着，弄得都没野性了。