METHOD AND SYSTEM FOR PROVIDING REMOTE ACCESS SERVICE TO UPNP DEVICES USING PORT FORWARDING

摘要

PURPOSE: A method and a system for supplying a remote access service are provided to supply a service without the collision of an IP address in case a UPnP device uses out-of-band communication. CONSTITUTION: A local home gateway changes a port number and an IP address of a local UPnP(Universal Plug and Play) device into a port number of a TCP(Tape Carrier Package) socket(S214). The local home gateway changes UPnP access information within an SOAP(Simple Object Access Protocol) response message in an ALG(Application Level Gateway)(S224). In case the SOAP response message includes access information for out-of-band communication, the local home gateway extracts an IP address and a port number(S226, S230). The local home gateway sets up port forwarding(S232).