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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.XSS attacks fall into two categories电影投资发行公司NEW透露，将以明年上半年播出为目标，投入制作电视剧《邻家律师赵德浩2》。据NEW方面透露，此前曾出演过《邻家律师赵德浩》的演员朴新阳将继续担任主演。对于姜素拉、柳秀荣、朴帅眉等其他演员是否出演的问题，相关人员表示：“目前，除朴新阳外，其他角色的演员还未确定。另外，电视剧《邻家律师赵德浩》改编自同名网络小说，讲述的是大有前途的出色律师因内部举报检察机关不正之风，瞬间失去一切跌入无尽深渊，进而展开第二人生的故事。该剧于今年3月播出，凭借贴近民众生活的题材与演员们的出色演技，受到了大众的支持与喜爱。　　3×02 《Guardians》：Cole和Jones前往第一次世界大战结束后的法国寻找Jennifer Goines，他们遭遇一个危险的时间旅行团队：「守护者」（Guardians）。不对，若是没送到的话，那这个小厮和箱子又是从何而来？周菡眼见众人纷纷劝周夫子，说定是有人冒充周耀辉的子女，让他不必放在心上，而周夫子却怔怔地看着她。电视剧《铁齿铜牙纪晓岚》在北京地区播出时获得了满堂彩，收视率创下新高；眼下，又有一部以纪晓岚为主人公的电视连续剧《风流才子纪晓岚》于2001年4月29日与北京观众见面。相同的是两部“纪晓岚”都诙谐幽默，节奏轻松，不同的是《铁齿》大牌云集，《风流》却是新人担纲。For example, if you can hit 10,000 damage this time and increase physical/magic damage by 30%, then the hit effect is 10,000 × (1 +30%) = 13,000.