Is the correct statement about TCP proxy and TCP reverse source probing?

Note: TCP reverse source detection principle, when the device receives a SYN message, it will detect the existence of the source IP. The TCP reverse source detects the SYN-ACK sequence number that is sent incorrectly. If the source exists, it will send an RST message to request a three-way handshake. Because the reverse source detection mechanism is not affected by the successful establishment of the session table, it is recommended to use the reverse source detection technology to defend against SYN flood attacks. If you use TCP proxy attack defense, you must enable the state detection mechanism.