FIREWALL SETTING METHOD AND SYSTEM FOR THE SAME

PROBLEM TO BE SOLVED: To provide a firewall setting method and a system therefor that limit users having access from an external network for each terminal of an internal network and allow the users to connect to a terminal of the internal network selectively. SOLUTION: An HGW 1 has a communication part 31, an authentication function part 32, a directory management function part 33 and a channel setting function part 34. The communication part 31 receives data communication to the HGW 1. The authentication function part 32 determines whether the data are from an authentic user or not. The directory management function part 33 receives a service registration, registers it in service information, checks accordance with service publicity policy and requests the channel setting function part 34 to set a channel. The channel setting function part 34 monitors a data communication state on the channel to cancel the setting of an unnecessary channel.