Patent ID: 9088547
Filing Date: 2015-07-21
Classification: H04L

Abstract:
1. A method for connecting between an information processing terminal on an external network via a first firewall, the first firewall being external to the information processing device and included in the external network, and a gateway device and a business server on an internal network, the gateway device being connected to the external network via a second firewall, and the business server being connected to the external network via the gateway device, comprising: the information processing terminal capturing an IP address from the first firewall by UPnP; the information processing terminal transmitting a control e-mail to a mail server, the control e-mail including the captured IP address and requesting a connection between the information processing terminal and the business server through the gateway device; and the gateway device acquiring the control e-mail from the mail server via the second firewall and establishing a VPN connection from the business server to the to the first firewall based on the captured IP address included in the control e-mail to connect the information processing terminal and the business server via the first and second firewalls.