| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide safe and secure remote access from an outdoor terminal to a home apparatus. <P>SOLUTION: A secure access system 60 includes an IP network 100 having a SIP server 30, to which an HGW (Home GateWay) 11 of a home network 10 accommodating home apparatuses 13 and an outdoor terminal 20 are connected. When detecting a call origination from the outdoor terminal 20 permitted to communicate with the home network 10 to a home apparatus 13-1 in the home network 10, the HGW 11 notifies the outdoor terminal 20 of a port number related to the home apparatus 13-1 and makes a firewall conduct transparent setting for the port number related to the home apparatus 13-1. When receiving an IP packet using the port number related to the home apparatus 13-1 from the outdoor terminal 20, the HGW 11 converts the received IP packet to an IP packet addressed to a local IP address of the home apparatus 13-1 by a network address translation operation. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
