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红椒和山芋相视一笑，均心花怒放。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.3. Strong sociality;出身贫寒的民桂经过自己的努力当上律师， 银知是他的秘书，一个热心正义的感的律师，两人携手办过很多的案子。 　　开朗又自信的检察员惠美，在调查一宗经济犯罪案件时得罪了权威人士，险些遇害，民桂仗义相救，惠美因此对民桂也产生好感。 　　银知再目睹了世景集团的世子基范和永春把遭轮奸的仙雅推出车窗外扬长而去的一幕。民桂决定接受这个案件，伸张正义。由于世景集团以卑鄙手段掩饰事实，迫使原本胜券在握的原告方败诉。仙雅的弟弟仙勇难忍气愤，在世景集团社长一家和俊星庆祝晚宴上刺伤基范。民桂为了减轻仙勇的罪名做最后努力，却被世景集团派来的人打伤住院。惠美被仙雅的遭遇和民桂为正义不惜牺牲一切的精神深深感动，在了解到世景集团的卑劣行为之后，毅然在法庭为仙勇开口说话，最后却由于她对法院的判决提出质疑，被迫离开检察院。……好吧，每一个高尚人格的背后，都是迫不得已的无奈。郑氏点头，听着窗外簌簌的落雪声，不由叹了口气。"Fu" (ancient prose), "Tang", "Ji", "Zheng" room six cut, sound volt. "Wen" to also. "" Return also. "Shun Dian" is like five instruments. "", also. "Xiaoya" Words and Thoughts. And "" answer also. "Life" Yu Wang. And "" white also. There are also "Qu". And "" life also. "Zhou Tianguan" minister. "", also, also. [Shu] The ministers were ordered by the king, and the envoys acted against the king. He evoked the soul again. The way of "Tan Gong" is also. "" Evocation, ordinary its essence. Again. "Ge Liang, out of the watch" room, all. Another surname. "Zhengzi Tong" Yuan has a heart. The name of the state. Zhou Zhizhou in Sui · Geography