FIELD: information technology.
SUBSTANCE: method includes receiving authentication request information from an application service providing server in order to request the interface server to authenticate the user terminal receiving an application service provided from the application service providing server; authenticating the user terminal according to the authenticating request information; and transmitting authentication response information including an authentication result of performing the authentication method to the application service providing server. The interface server provides an interface for a network to the application service providing server, wherein the authentication method is selected by the interface server or the user of the user terminal without the intervention of application service provider for successful authentication of the user terminal when the authentication method selected by the application service provider is inapplicable for the interface server, wherein information on the authentication method selected by the user of the user terminal is used together with the interface server.
EFFECT: solving the engineering problem caused by that an application service providing server does not recognise the authentication method between user terminals and an interface server.
19 cl, 9 dwg
