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If an attacker sends SYN packets quickly with their own undisguised IP address, this is a so-called direct attack. This attack is very easy to implement because it does not involve spoofing or modifying packets below the user layer of the attacker's operating system. For example, he can simply send many TCP connection requests to implement this attack. However, for this attack to work, the attacker must also prevent his system from responding to SYN-ACK packets because of any ACK, RST, or ICMP (Internet? Control? Message? Protocol) will cause the server to skip the SYN-RECEIVED state (go to the next state) and remove the TCB (because the connection has been successfully established or recycled). Attackers can do this by setting firewall rules, causing the firewall to block all packets (except SYN) to reach the server, or causing the firewall to block all incoming packets so that SYN-ACK packets are discarded before reaching the local TCP handler.梅子寒低声道：差役们都仔细查看了，暂未发现伤痕。Someone will love youIndustrial Revolution 3.0-Information Age: Originated from the United States in the 1940s and 1950s, represented by the application of electronic computer technology, human society entered the "Information Age". The industrial production process is highly automated, and machinery can gradually replace human operations. ?　毕业两年的白领吴宇超为了追求已经离婚的大学时期女神吕晓嫣， 搬到了天通苑的一间合租屋，认识了一群各有故事的年轻人。庄谢希望爱丽丝能融入华夏文化，但是可不想爱丽丝通过出演武侠片的女主角来融入。《小站风云》是由天津电视台出品的电视剧，马玉辉执导，周振天编剧，陈昭荣、杨若兮、王强和韩雯雯等主演。