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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.人人有奖，现在立刻关注dd微信公众号。膨胀了。为了逃避现实生活重头开始，琼恩与男友哈利开始踏上旅程。可惜他们很快就发现任何事都没有想像中简单，同时觉悟到在这世界生存的唯一法则只有改变。　　同时本剧也讲述了顾阮阮倒追傅西洲，两人先婚后爱的甜虐故事。　　《我变美的那夏天》是部多代电视剧，剧情包括女主与两兄弟之间的三角恋，亦有各个母亲和自己子女的关系及女性友谊的题材。这才是最完美的尖上加油嘛，罗七得意笑道：怎么你不知道？想想在越国谁能狂妄到这个程度的除了他还会有谁？这个消息太过突然，周浩正在逐渐消化，考虑可能性的时候，耳边响起一个声音：没错，他就是尹旭，现如今的越王。