METHOD FOR INSERTING AND UNLOADING TCP PROXY AND SERVICE GATEWAY DEVICE

摘要

The present invention provides a TCP proxy insertion and uninstall method, and a service gateway device. The method includes: during establishment of a TCP connection, forwarding a TCP connection establishing packet between a TCP client and a TCP server through an L3, and recording option information and sequence number information of the TCP connection establishing packet; performing determination on a received packet according to a proxy policy after the TCP connection is established; forwarding the received packet if it is determined that no proxy process is required for the received packet according to the proxy policy, and updating the recorded sequence number information according to sequence number information of the received packet; and generating a client pseudo socket and a server pseudo socket according to the recorded option information and the sequence number information if it is determined that a proxy process is required for the received packet according to the proxy policy, terminating the received packet by adopting the client pseudo socket and the server pseudo socket, processing the terminated packet through an L7 and forwarding the processed packet. With the embodiments of the present invention, system performance can be improved.