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Before 17:00 on June 28君子失时，拱手于小人之下。那好，这个人暂且排除。　　在线等，有点急！旺村的元宝被某网站选中参加一档综艺节目，没想到一炮而红。他奇特的人生经历引发了广泛的社会关注，同时也引发了科学界的瞩目。在名利和欲望的驱使之下，郑正、傅负这两位机器人研究领域的科学家相继卷入元宝争夺战中。学生皇甫不惑也不甘寂寞，借机研制出机器人元宝和龙女，一步步将元宝打造成了家喻户晓的明星。但在真正一飞冲天之后，元宝、皇甫不惑等人渐渐迷失了自我。在对名利的追逐中，皇甫、元宝亲历郑正等人被名利怪兽吞噬了本心，酿成悲剧的过程，不约而同地陷入了对生命价值的反思，在充分认识到亲情、友情和爱情的可贵之后，他们最终选择放下名利，回归原本就属于他们的平凡生活。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.2) Divide line segments equally. Right-click Segment Split to enter the required number of segments in the value box in the lower right corner.