INTRANET REMOTE ACCESS METHOD, AND INTRANET REMOTE ACCESS PROCESSING PROGRAM AND RECORDING MEDIUM WITH THE PROCESSING PROGRAM RECORDED

PROBLEM TO BE SOLVED: To provide an intranet remote access method by which even a terminal single body such as a Web compatible mobile phone can make a remote access to an intranet while securing high security and to provide an intranet remote access processing program and a recording medium with the processing program recorded. SOLUTION: A VPN(virtual private network) tunnel 9 is placed between a VPN gateway 3 and a gateway device 1 in response to a command control from a VPN session management server 2 on the Internet 6 attended with an entry of a terminal ID from the Web compatible mobile phone 4 assigned corresponding to devices (devices 1,..., N) on the intranet 5 and a VPN session management server 2 conducts a substitute access via the VPN tunnel 9 on behalf of the Web compatible mobile phone 4 attended with the entry of the terminal ID and a device name from the Web compatible mobile phone 4 and occurrence of a required access to the concerned device.