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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.As you can see, subscribers only subscribe to messages that interest them.Let me give you a detailed introduction to these five functions and functions of the professional mode.《香格里拉》讲述的是一个高原上的少年，如何在生与死的各种考验中成长的故事，而这个故事包含的，有爱情，有各种势力的明争暗斗，也有面对外敌入侵大家的团结一心，这些又都是发生在香格里拉，这片传奇的雪域高原上，少数民族身上热情如火的精神，造就了这个传奇。System.out.println (result);泰國gmm25頻道准备在AIS PLAY的第一个原创系列节目“ Fai Bridge Club的桥梁”中进行大量组织，广播节目有8个故事。 那可以说很痛！ 真的吗？ 从2月28日开始，每个星期五晚上7点在AIS PLAY和GMM25频道上He said: "The world is not ready yet."