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It will never be given by others.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.The picture shows Mr. Sun and his team members communicating with each other.原本呢，我瞅着二姐姐难受，我很生气，就想打探田少爷那个娘和表妹的事，想为二姐姐出口气……他老老实实地将事情经过告诉板栗，倒叫板栗诧异起来。尹旭接到奏报，匆匆赶到御书房，这个时候北方任何的消息都显得格外重要，都是事关身价性命和前程的大事。这都什么啊？杨长帆脑子彻底乱了。