JP4291213B2 - Authentication method, authentication system, authentication proxy server, network access authentication server, program, and recording medium - Google Patents

Description

  The present invention relates to a single sign-on authentication technique in a network configuration in which a user terminal receives a service provided from a service server via a network, and more particularly to an authentication technique for the purpose of strengthening security.

  There is a single sign-on technology that enables access to a plurality of Web servers in a virtual closed network (VPN) by a single authentication procedure.

  (1) The single sign-on technology includes a reverse proxy type and an agent module type. The former receives all access traffic addressed to the Web server by a dedicated single sign-on server, and an access list defined for each user. In view of the above, it is a method of selecting whether or not packet transfer is possible, and is unsuitable for application to a large-scale network in terms of concentration of processing load on the single sign-on server. In the latter, the authentication status of user authentication is determined by each Web server, and if it is not authenticated, the access request from the user is transferred to the single sign-on server to be authenticated. If the authentication is successful, a certificate is issued, and each Web server determines that the user has been authenticated, and is allowed access by attaching the certificate in the received access request. The operations described above are based on the assumption that the user terminal is already connected to the network where the Web server is installed, and authentication is required for the connection to the VPN itself as when connecting to the VPN remotely. In such a case, the user needs two procedures, and there is a problem that packet management becomes complicated.

  (2) An example of single sign-on technology for accessing a Web server in a VPN by connecting to a VPN via a telephone network or the Internet from a terminal of a remote access user is in Non-Patent Document 1. This will be described with reference to FIG. Information necessary for authentication from the terminal of the remote access user, such as ID and password, is sent to the network access authentication server via the remote access server (RAS) or IPsec (Security Architecture for the Internet Protocol) gateway. The network access authentication server performs user authentication in light of the user authentication information held inside, and issues a VPN connection IP address to the terminal that has made the connection request, and manages it in the network authentication state table. Next, when the user tries to access a certain Web server (service server) in the VPN, since the terminal does not hold the certificate at that time, the access request from the terminal is sent by the Web server (service server). Redirected to the authentication proxy server. The authentication proxy server extracts the transmission source IP address from the authentication request packet transmitted from the terminal and transmits it to the network access authentication server. The network access authentication server refers to the network authentication state table to search whether the received IP address is the IP address that was previously issued when authenticating the VPN connection, and sends the result to the authentication proxy server. The authentication proxy server issues a certificate if the previously sent IP address corresponds to a paid-out IP address. As described above, the user realizes the VPN connection and the single sign-on to the Web server in the VPN by a single authentication procedure at the time of the VPN connection.

  (3) A single sign-on technique in the case where a remote access base is configured with a LAN and a terminal connected to the LAN remotely accesses the VPN will be described below. In this case, it is possible to connect with a plurality of terminals simultaneously via the user router. When the connection mode described in (2) is applied, only the public network side address of the user router is given from the network access authentication server. Thus, since the address of the terminal that is the transmission source address of the access request packet that reaches the authentication proxy server does not correspond one-to-one for each terminal, the authentication state cannot be determined by the same procedure as in (2). An example for this is in Non-Patent Document 1, which will be described below with reference to FIG. Specifically, a user router and a local authentication server are arranged in the remote access base, and the authentication status is managed by notifying the network access authentication server of the user authentication and address payout result for the terminal in the remote access base. Here, the user router has a function of notifying an address to the terminal in the LAN and notifying the address to the network access authentication server. The local authentication server authenticates the user with the ID and password in response to a request from the user router. As described above, the address information is also stored in the network access authentication server for the terminal in the LAN. When an access request is made from the terminal to the Web server in the VPN, (2) is shown. Single sign-on to the Web server is possible from a remote access user terminal by the same processing as when connecting to the VPN via the telephone network or the Internet and accessing the Web server in the VPN.

  Neither of them describes the authentication collaboration that is the object of the present invention.

Jun Miyoshi, Hiroyuki Ishikawa, “Examination of network-linked single sign-on implementation in IP-VPN”, IEICE, Information Network Society, IEICE Technical Report, NS2002-313, IN2002-286, March 2002 279-284

  In the conventional technology, if the authentication (NW access authentication) with the network access authentication server has been completed, when the user's terminal tries to access the service server, the service server is authenticated if the corresponding user has been authenticated. To start. On the other hand, if the authentication is unauthenticated by the service server, the authentication proxy server receives an authentication request via the user terminal, and if authentication (IDP authentication) at the authentication proxy server has already succeeded or authentication has succeeded, the authentication The proxy server generates authentication result information (assertion) and requests the service server to verify the authentication result information. If the verification result information is verified on the service server, the service can be provided regardless of the NW access authentication status. It becomes. In any case, if either NW access authentication or IDP authentication is successful, the service can be provided. NW means a network.

An object of the present invention is to solve the following problems and realize single sign-on with stronger security for an open network such as the Internet.
(1) Problem: Since the NW user ID and the IDP user ID are 1: 1, authentication (1: n) that identifies individuals (terminals) in the home gateway cannot be performed.
(2) Problem: Since the NW user ID and the IDP user ID are 1: 1, it is not possible to cope with a form (n: 1) in which one user has a plurality of NW user IDs.
(3) Function improvement: IDP authentication and NW access authentication are used together, and security is further strengthened by issuing a certificate only when both authentications are confirmed.

In order to solve the above problems, the present invention provides a network access authentication server that authenticates network access of a user terminal, a service server that provides a service to the user terminal, and authentication of the user terminal for providing a service of the service server An authentication method in an authentication system formed by connecting an authentication agent server acting as an agent over a network,
The authentication proxy server receives an authentication request from the service server via the user terminal, and the authentication proxy server performs the network access authentication after the authentication process between the user terminal and the authentication proxy server is completed. Requesting the server to check the network access authentication state using the IP address of the user terminal or the network user ID of the user of the user terminal as a user ID in the network access authentication server; and the network access authentication server receives the request from the authentication agent server, and the authentication state information indicating the authentication status in the network access authentication server, the network user ID corresponding to the IP address is a key in the request from the authentication agent server or The I P address that corresponds to the network user ID is a key in the request from the serial authentication agent server, and sending to the authentication proxy server, wherein the authentication agent server, authentication state received from the network access authentication server Information and network access authentication server requesting confirmation using IP address as key and network user ID received from network access authentication server or network access authentication server requesting confirmation using network user ID as key and network access Verifying the network IP address received from the authentication server and, if valid, sending an authentication response including authentication result information to the service server via the user terminal, Recognition of Service after verification end of the response, characterized in that is started.

A network access authentication server that authenticates network access of the user terminal; a service server that provides a service to the user terminal; and an authentication agent server that performs authentication of the user terminal for providing the service of the service server. An authentication method in an authentication system that is connected via an authentication method, wherein if the service server can confirm the authentication of the user in response to a service request from the user terminal by a user, a service is provided to the user. Providing an authentication request including a redirect destination address from the service server to the user terminal when the user authentication cannot be confirmed, and including an originating IP address from the user terminal to the authentication proxy server. Before sending authentication request When the authentication proxy server confirms the user, it generates authentication result information and sends an authentication response including the authentication result information and a redial destination address to the user terminal; and the authentication result from the user terminal to the service server Sending an authentication response including information; verifying the authentication result information at the service server; notifying the user that service cannot be provided if the authentication result information is invalid; and the authentication result When the information is valid, the service server provides a service to the user, and after the authentication processing between the user terminal and the authentication proxy server is completed when the authentication proxy server has not confirmed the user. Network access authentication server using the IP address as a key A step of requesting confirmation of the state, a step of searching the network access session information management table for a network user ID which is a user ID in the network access authentication server corresponding to the IP address of the network access authentication server, and When the network user ID can be acquired, sending the authentication status information indicating the authentication status in the network access authentication server and the network user ID from the network access authentication server to the authentication proxy server; A step of searching an IDP user ID corresponding to the acquired network user ID, which is a user ID in the authentication proxy server, from a user management table; and the acquired IDP user ID and the A step of comparing the IDP user ID acquired at the time of authentication between the user terminal and the authentication proxy server, and an authentication response including authentication result information to the user terminal when the two match by the comparison Transmitting an authentication response including the authentication result information from the user terminal to the service server, and the service is started after the verification of the authentication response in the service server is completed. It shall be the feature.

  A network access authentication server that authenticates network access of the user terminal; a service server that provides a service to the user terminal; and an authentication agent server that performs authentication of the user terminal for providing the service of the service server. An authentication method in an authentication system that is connected via an authentication system, wherein if the service server can confirm the authentication of the user in response to a service request from the user terminal by the user, Providing an authentication request including a redirect destination address from the service server to the user terminal when the user authentication cannot be confirmed, and including an originating IP address from the user terminal to the authentication proxy server. Before sending authentication request When the authentication proxy server confirms the user, it generates authentication result information and sends an authentication response including the authentication result information and a redial destination address to the user terminal; and the authentication result from the user terminal to the service server Sending an authentication response including information; verifying the authentication result information at the service server; notifying the user that service cannot be provided if the authentication result information is invalid; and the authentication result When the information is valid, the service server provides a service to the user, and the authentication proxy server corresponds to the IDP user ID acquired by the authentication proxy server when the user has not been confirmed. A network user ID to be searched from the IDP user management table; Requesting the network access authentication server to check the network access authentication state using the network user ID as a key, and the network access authentication server to access the IP address corresponding to the network user ID when the network user ID is acquired. A step of searching from the session information management table, and a step of sending the authentication status information indicating the authentication status in the network access authentication server and the IP address from the network access authentication server to the authentication proxy server when the corresponding IP address is acquired The authentication proxy server compares the acquired IP address with the originating IP address in the authentication request, and when the comparison results in a match, An authentication response including authentication result information; and a step of transmitting an authentication response including the authentication result information from the user terminal to the service server, and after the verification of the authentication response at the service server is completed. The service is started.

  The authentication method is an authentication method in an authentication system in which a plurality of network access authentication servers are connected under one authentication proxy server, wherein the authentication proxy server is between the user terminal and the authentication proxy server. When the network access authentication state is confirmed from the authentication proxy server to the network access authentication server after the authentication process is completed, the corresponding network is identified by an identifier for identifying the network access authentication server to which the user belonging to the authentication proxy server belongs. A step of specifying an access authentication server; and a step of requesting the network access authentication server to check the network access authentication state from the authentication proxy server.

  In the authentication method, when accessing the network access authentication server from the authentication proxy server, the authentication proxy server prepares a table for subtracting the corresponding authentication server from the IP address of the user terminal; and And using the IP address to identify the corresponding network access authentication server and in the authentication process, the authentication by the network access server and the authentication by the authentication proxy server are performed in cooperation, or the network access server by the authentication and authentication proxy Instead of performing authentication in the server in cooperation, performing only network access authentication alone.

The network and edge routers to assign fixedly a I P address for each line, and the service server for providing a service to a user terminal, an authentication proxy server to proxy authentication of the user terminal for servicing of the service server An authentication method in an authentication system connected via the authentication server , wherein the authentication proxy server receives an authentication request from the service server via the user terminal, and the authentication proxy server is connected to the user terminal. In IDP authentication between authentication proxy servers, the user terminal is authenticated and the edge router stored in the authentication proxy server as user account information for each IDP user ID entry is fixed for each line. It verifies the source IP address to the assigned IP address to take advantage , If valid, the authentication result inclusive authentication response information, said via user terminals have a, and sending to the service server, the service is started after verifying the completion of authentication response in said service server characterized in that that.

A network access authentication server that authenticates network access of the user terminal; a service server that provides a service to the user terminal; and an authentication agent server that performs authentication of the user terminal for providing the service of the service server. An authentication system connected via the authentication server, wherein the authentication proxy server receives an authentication request from the service server via the user terminal, and an authentication process between the user terminal and the authentication proxy server After completion, the network access authentication server is requested to confirm the network access authentication state using the IP address of the user terminal or the network user ID of the user of the user terminal as a user ID in the network access authentication server. means , Network users to the network user ID or the network access authentication server has received the on the authentication state information received from the network access authentication server and the network access authentication server to request a check of the IP address as a key from the network access authentication server The IP address received from the network access authentication server is verified by requesting confirmation using the ID as a key , and if valid, an authentication response including authentication result information is sent to the service server via the user terminal. and means, wherein the network access authentication server, receiving a request from the authentication agent server, and the authentication state information indicating the authentication status in the network access authentication server, a key in the request from the authentication agent server I The I P address that corresponds to the network user ID is a key in the request from the network user ID or the said authentication agent server corresponding to the address, means for sending to the authentication proxy server, it comprises, at said service server The service is started after the verification of the authentication response is completed.

A network access authentication server that authenticates network access of the user terminal; a service server that provides a service to the user terminal; and an authentication agent server that performs authentication of the user terminal for providing the service of the service server. An authentication proxy server in an authentication system connected via a means for receiving an authentication request from the service server via the user terminal, and after completion of the authentication process between the user terminal and the authentication proxy server Means for requesting the network access authentication server to confirm the network access authentication state using the IP address of the user terminal or the network user ID which is the user ID of the user of the user terminal in the network access authentication server as a key. , Network users to the network user ID or the network access authentication server has received the on the authentication state information received from the network access authentication server and the network access authentication server to request a check of the IP address as a key from the network access authentication server The IP address received from the network access authentication server is verified by requesting confirmation using the ID as a key , and if valid, an authentication response including authentication result information is sent to the service server via the user terminal. And means.

A network access authentication server that authenticates network access of the user terminal; a service server that provides a service to the user terminal; and an authentication agent server that performs authentication of the user terminal for providing the service of the service server. An authentication proxy server in an authentication system connected via a means having a user account including an IDP user ID that is a user ID in the authentication proxy server and a network user ID that is a user ID in a network access authentication server; After completion of the authentication process between the user terminal and the authentication proxy server, the network access authentication server confirms the network access authentication state with the originating IP address in the authentication request packet from the user terminal as a key. A means for requesting, a means for receiving a network access authentication status confirmation result including a network user ID from the network access authentication server if the network access authentication status has been authenticated, and a user if the network access authentication status cannot be confirmed. Means for notifying service provision; means for searching for an IDP user ID corresponding to the network user ID acquired by reception from means having the user account; means for determining whether an IDP user ID has been acquired; Means for notifying the user that service cannot be provided when it cannot be acquired, means for comparing the acquired IDP user ID with the IDP user ID acquired during authentication between the user terminal and the authentication proxy server, One comparison of IDP user ID Means for judging whether to be a means for notifying the user f service unavailable If they do not match, and means to generate an authentication result information if they match, characterized in that it comprises a.

  A network access authentication server that authenticates network access of the user terminal; a service server that provides a service to the user terminal; and an authentication agent server that performs authentication of the user terminal for providing the service of the service server. An authentication proxy server in an authentication system connected via a means having a user account including an IDP user ID that is a user ID in the authentication proxy server and a network user ID that is a user ID in a network access authentication server; Means for retrieving a network user ID corresponding to the IDP user ID acquired at the time of authentication from the means having the user account after the end of the authentication process between the user terminal and the authentication proxy server; A means for judging whether or not it has been obtained, a means for notifying the user that service cannot be provided if it has not been obtained, and if it has been obtained, the authentication proxy server sends the network user ID to the network access authentication server. Means for requesting confirmation of the network access authentication status as a key, and the authentication proxy server receives from the network access authentication server a network access authentication status confirmation result including the network authentication status and, if authenticated, the IP address. Means for determining whether or not the network authentication status has been completed, means for notifying the user that the service cannot be provided if not authenticated, and IP address acquired from the network access authentication server if authenticated. Address and source IP address of the authentication request packet A means for comparing, a means for determining whether or not the IP addresses match, a means for notifying the user that the service cannot be provided if they do not match, and a means for generating authentication result information if they match. It is characterized by providing.

  The authentication proxy server includes means for holding an identifier for identifying a network access authentication server to which a user belongs, and means for determining a network access authentication server to request confirmation based on the identifier. .

In addition, the network includes an edge router that assigns a fixed IP address for each line, a service server that provides a service to a user terminal, and an authentication proxy server that performs authentication of the user terminal to provide the service of the service server. An authentication proxy server in an authentication system connected via the authentication server , and authenticating the user terminal in IDP authentication with the user terminal and means for receiving an authentication request from the service server via the user terminal performs, the authentication agent the edge router that is stored in the server is fixedly assigned IP address validation of the origination IP address to take advantage of every line as user account information for each entry in the IDP user ID If it is valid, an authentication response including authentication result information is sent to the user terminal. And means for sending to the service server via .

  A network access authentication server that receives a request for confirmation of a network access authentication state from the authentication proxy server using an IP address or a network user ID as a key, the network access authentication server receiving a request from the authentication proxy server And means for sending the authentication status information and a network user ID or IP address corresponding to the IP address or the network user ID to the authentication proxy server.

  A network access authentication server that receives a request for confirmation of a network access authentication state using the IP address as a key from the authentication proxy server, and means for receiving a network access authentication state confirmation request using the IP address as a key; Means for retrieving a network user ID corresponding to the IP address from the network access session information management table; means for determining whether or not the corresponding network user ID has been acquired; and if not, the authentication proxy server A means for returning a network access authentication status result (authentication unsuccessful), and a network access authentication status confirmation result (authentication status is authenticated, network user ID) from the network access authentication server to the authentication proxy server if acquisition is possible. Characterized in that it comprises means for sending, a.

  A network access authentication server that receives a network access authentication status confirmation request from the authentication proxy server using a network user ID as a key, and that receives a network access authentication status confirmation request using the network user ID as a key A means for retrieving an IP address corresponding to the network user ID from the network access session information management table; a means for determining whether or not the corresponding IP address has been acquired; A means for returning the network access authentication status result (authentication unsuccessful), and, if acquired, from the network access authentication server to the authentication proxy server, a network access authentication status confirmation result (authentication status authenticated, IP address Characterized in that it comprises means for sending a scan), the.

  Further, the present invention is a program for causing a computer to execute each step, a program for causing a computer to function as each means, and a computer-readable recording medium on which the program is recorded.

(1) The network access authentication server only authenticates in response to an authentication request from the user terminal, and the user does not need to be aware of subsequent IDP authentication or authentication processing at the service server when a service request is made to the service server. The service can be enjoyed with a single authentication procedure.
(2) By using IDP authentication and NW access authentication in combination, it is possible to improve security and authenticate even individuals. That is, it is possible to perform authentication that identifies individual users (user terminals) in the home gateway. Further, one user can have a plurality of NW user IDs.
(3) The service server is guaranteed to be accessed from an appropriate network, and a special service can be provided only to a specific network.
(4) For the purpose of making it unnecessary for the service provider to acquire accounting information, the issuance history of authentication result information from the authentication proxy server is associated with the issuance destination service (URL) and the issuance user ID. Can be used as billing information.
(5) Even when a plurality of network access authentication servers are connected under one authentication proxy server, the corresponding network access authentication server is determined by a table in which the authentication server is subtracted from the identifier or IP address of the authentication server. Can be specified.

  Embodiments of the present invention will be described below with reference to the drawings.

  In the system configuration including the user terminal 100, the home gateway 110, the network access authentication server 120, the authentication proxy server 130, the service server 140, and the access server 150 according to FIG. 1, IDP authentication by the authentication proxy server 130 (in the authentication proxy server) ) And NW access authentication (authentication by the network access authentication server) by the network access authentication server 120 will be described below in stages. The network may be abbreviated as NW.

  As shown in FIG. 1, a plurality of user terminals (user A and user B terminals in FIG. 1) can be connected to the home gateway 110, but the user terminal 100 directly accesses the access server 150 without providing the home gateway 110. You may make it connect to. Further, the home gateway 110 may not be used for home use, and may generally be a gateway for connecting the user terminal 100 and the network. The access server 150 dynamically assigns an IP address to the user terminal 100 / home gateway 110. The network access authentication server 120 is a RADIUS (Remote Authentication Dial-In User Servce) server, and an NW user ID (NW X in the example in the figure) that is a user ID in the network access authentication server and a dynamically assigned IP assigned thereto. The NW access session information including the address is stored in the NW access session information management table 121. Further, the authentication proxy server 130 includes an IDP user ID (user A and user B in the example in the figure) and a corresponding password (PWD in the example in the figure) and a user ID in the network access authentication server. A user account including a certain NW user ID (NW X in the illustrated example) is stored in the IDP user management table 131, and a plurality of IDP user IDs can be managed for one NW user ID. Therefore, the network access authentication server 120 cannot identify the user A and user B terminals connected to the same home gateway 110, but the authentication proxy server 130 can identify the user A and user B terminals.

First, the outline of the processing procedure will be described with reference to FIG.
(1): [1] The user terminal 100 is connected to the network access authentication server 120 via the home gateway 110 and the access server 150, and the network access authentication server 120 transmits the NW user ID to the user terminal 100 / home gateway 110. NW access authentication is performed with a password. The network access authentication server 120 stores the NW user ID (NW X) and the IP address dynamically assigned by the access server 150 (dynamically assigned IP address) in the NW access session information management table 121.
(2): [2] The user terminal 100 requests the service server 140 for a service by single sign-on.
(3): [3] The service server (SP) 140 sends an authentication request including the redirect URL (URL of the authentication proxy server 130) to the user terminal 100, and the user terminal 100 sends an authentication request to the authentication proxy server (IDP) 130. return.
(4): [4] The authentication proxy server 130 authenticates the user terminal 100 with HTTPS (authentication using an IDP user ID / password or electronic certificate), and the authentication proxy server 130 is connected to the user terminal 100 / home gateway 110. The source IP address is also acquired (the source IP address may be acquired in [3]).
(5): [5] The authentication proxy server 130 inquires of the network access authentication server 120 about the IP address currently assigned with the NW user ID corresponding to the user as a key, and acquires the IP address. Conversely, the NW user ID may be acquired using the originating IP address as a key.
(6): [6] The authentication proxy server 130 compares not only IDP authentication (password authentication, etc.) but also the originating IP address obtained in [4] with the IP address obtained in [5] to verify the originating IP address. Do.
(7): [7] The service server 140 acquires authentication result information (assertion) from the authentication proxy server 130 via the user terminal 100 / home gateway 110, verifies the authentication result information, and if valid, the user A service is provided to the terminal 100 (the terminal of the user B in the case of FIG. 1).

  As a result, it is possible to confirm that access is being made through a legitimate route, and it becomes possible to prevent impersonation by improvisation. Even if the password (PWD) is leaked, spoofing can be detected by verifying the originating IP address. The authentication proxy server 130 can perform authentication that identifies an individual. Furthermore, the service provider 140 can provide a service only to users who access from a specific network.

Hereinafter, this processing procedure will be described in detail. When a service request is first made from the user terminal 100 / home gateway 110 to the service server 140 to receive service provision, the service server 140 or the authentication proxy server is already used. The procedure when the authentication state is confirmed in 130 will be described in detail with reference to FIG. Step 1 etc. are abbreviated as S1 etc. in the figure. In the figure, the home gateway may be abbreviated as HGW.
(1): Step 1: A service request including a service providing URL is sent from the user terminal 100 / home gateway 110 to the service server 140.
(2): Step 2: The service server 140 confirms the authentication status of the user. If authenticated, the process proceeds to step 9 where service provision to the user is started. If not authenticated, the process proceeds to step 3.
(3): Step 3: An authentication request including a redirect URL is sent from the service server 140 to the user terminal 100 / home gateway 110.
(4): Step 4: The user terminal 100 / home gateway 110 returns an authentication request including the originating IP address to the authentication proxy server 130.
(5): Step 5: The authentication proxy server 130 receives the authentication request and confirms the authentication state of the corresponding user. Since the authentication state of the user has been authenticated (under the conditions described here), authentication result information (assertion) is generated, and the process proceeds to step 6.
(6): Step 6: An authentication response (authentication result information, redirect destination URL) is sent from the authentication proxy server 130 to the user terminal 100 / home gateway 110.
(7): Step 7: The user terminal 100 / home gateway 110 returns the authentication response (authentication result information) to the service server.
(8): Step 8: The service server 140 verifies the authentication result information. If it is valid, the service server 140 notifies Step 9;
(9): Step 9: The service server starts providing the service to the user terminal 100 / home gateway 110.

Next, in the system configuration including the user terminal 100, the home gateway 110, the network access authentication server 120, the authentication proxy server 130, the service server 140, and the access server 150 according to FIG. 1, the processing steps described with reference to FIG. The case of the following situation will be described in detail. That is, this is a case where the authentication at the service server 140 and the authentication proxy server 130 is unauthenticated, and the procedure after the situation where the authentication proxy server 130 is unauthenticated at the authentication proxy server 130 will be described below (step 5). 1): Step 10: IDP authentication is performed between the user terminal 100 / home gateway 110 and the authentication proxy server 130 using an ID, a password (PWD), or the like.
(2): Step 11: If authentication is successful in the authentication proxy server 130, the IP address (source IP address) of the authentication request packet is sent from the authentication proxy server 130 to the network access authentication server 120 in order to verify the network authentication status. ) As a key to request confirmation of network access authentication status. Conversely, there is a method of acquiring an IP address using the NW user ID as a key.
(3): Step 12: The network access authentication server 120 searches the NW access session information management table 121 for the NW user ID (NW X in FIG. 1) corresponding to the IP address (dynamically assigned IP address in FIG. 1). . If the corresponding NW user ID can be acquired, the process proceeds to step 13.
(4): Step 13: The network access authentication server 120 sends the network access authentication status confirmation result including the network authentication status authenticated and the NW user ID to the authentication proxy server 130.
(5): Step 14: The authentication proxy server 130 searches the IDP user management table 131 for the IDP user ID corresponding to the acquired NW user ID (NW X in FIG. 1), and the IDP user ID (user in FIG. 1). If A and user B) can be acquired, the acquired IDP user ID is compared with the IDP user ID acquired at the time of IDP authentication. If there is a match in this comparison, authentication result information (assertion) is generated.
(6): Step 6: An authentication response (authentication result information, redirect destination URL) is sent from the authentication proxy server 130 to the user terminal 100 / home gateway 110.
(7): Step 7: The user terminal 100 / home gateway 110 returns the authentication response (authentication result information) to the service server 140.
(8): Step 8: The service server 140 verifies the authentication result information. If it is valid, the service server 140 notifies step 9;
(9): Step 9: The service server 140 starts providing services to the user terminal 100 / home gateway 110.

  Thus, the authentication process in which IDP authentication and NW access authentication are linked is completed.

The processing contents of the authentication proxy server 130 from the step 5 in FIG. 6 to the transition to step 6 will be described in detail with reference to FIG.
(1): Step 21: The authentication proxy server 130 receives an authentication request from the service server 140 via the user terminal 100.
(2): Step 22: Obtain a source IP address (source IP address) from the authentication request.
(3): Step 23: Referring to the session information, the authentication status of the corresponding user is confirmed. The session information is information for managing a session. In the present embodiment, the session information is information that is managed by the service server 140 using the cookie information issued every time a user makes a new access as a key, and includes a session ID and an authentication state.
(4): Step 24: It is determined whether or not the authentication state has been confirmed. If authenticated, the process proceeds to step 28. If not authenticated, the process proceeds to step 25. The case of proceeding to step 25 will be described first.
(5): Step 25: Implement IDP authentication using ID / password, public key certificate, biometrics, one-time password, or the like.
(6): Step 26: It is determined whether or not the IDP authentication is successful. If successful, the process proceeds to step 27. If unsuccessful, the process proceeds to step 30.
(7): Step 27: The NW access authentication state is verified. This process will be described in detail with reference to FIG.
(8): Step 28: When the verification of the NW access authentication state is received normally, authentication result information (assertion) is generated.
(9): Step 29: The authentication proxy server 130 requests the user terminal 100 to send authentication result information (assertion) to the service server 140.
(10): Step 30: This step is performed when the authentication in Step 26 is unsuccessful, and notifies the user that the service server cannot be provided.

  Further, details of the processing related to the verification of the NW access authentication state in step 27 in FIG. 7 will be described in detail with reference to FIGS. 8 (1) and 8 (2). In the former diagram, an authentication request is sent from the authentication proxy server to the network access authentication server using the IP address as a key, and in the latter diagram, the NW user ID is used as a key.

First, the processing method when the IP address is used as a key will be described in detail with reference to FIG.
(1): Step 31: The authentication proxy server 130 requests the network access authentication server 120 to confirm the network access authentication state using the originating IP address in the authentication request packet as a key.
(2): Step 32: Receive a network access authentication status confirmation result (network authentication status and NW user ID if authenticated) from the network access authentication server 120.
(3): Step 33: If the network authentication state has been authenticated, the process proceeds to step 34, and if not, the process proceeds to step 30 in FIG.
(4): Step 34: The IDP user management table 131 is searched for an IDP user ID corresponding to the acquired NW user ID.
(5): Step 35: It is determined whether or not the IDP user ID has been acquired. If it can be obtained, the process proceeds to step 36, and if it cannot be obtained, the process proceeds to step 30 in FIG.
(6): Step 36: The IDP user ID acquired by the authentication proxy server 130 is compared with the IDP user ID acquired at the time of IDP authentication.
(7): Step 37: It is determined whether there is a matching IDP user ID. If there is a match, the process proceeds to step 28 in FIG. If not, the process proceeds to step 30 in FIG.

Next, the processing when the NW user ID is used as a key in the processing method related to the verification of the NW access authentication state will be described in detail with reference to FIG.
(1): Step 41: The authentication agent server searches the IDP user management table for the NW user ID corresponding to the IDP user ID acquired at the time of IDP authentication.
(2): Step 42: It is determined whether or not the NW user ID has been acquired. If it can be obtained, the process proceeds to step 43, and if it cannot be obtained, the process proceeds to step 30 in FIG.
(3): Step 43: The authentication agent server 130 requests the network access authentication server 120 to confirm the NW access authentication state using the NW user ID as a key.
(4): Step 44: The authentication proxy server 130 receives the NW access authentication status confirmation result (NW authentication status and IP address if authenticated) from the network access authentication server 120.
(5): Step 45: It is determined whether or not the NW authentication state has been completed. If completed, the process proceeds to step 46, and if not approved, the process proceeds to step 30 in FIG.
(6): Step 46: The IP address acquired from the network access authentication server 120 is compared with the originating IP address of the authentication request packet.
(7): Step 47: Judge whether there is a match in the comparison of IP addresses. If there is a match, the process proceeds to step 28 in FIG. 7, and if not, the process proceeds to step 30 in FIG.

Further, in the verification of the NW access authentication state using the IP address as a key in the IDP process of FIG. 8 (1), the process of the network access authentication server 120 in step 32 of FIG. Explained. That is,
(1): Step 51: The network access authentication server 120 receives a network access authentication status confirmation request using the IP address as a key.
(2): Step 52: NW user ID corresponding to the IP address is searched from the NW access session information management table 121 (3): Step 53: It is determined whether or not the corresponding NW user ID has been acquired. If it can be obtained, the process proceeds to step 55.
(4): Step 55: The network access authentication server 120 sends a network access authentication state confirmation result (authentication state is authenticated, NW user ID) to the authentication proxy server 130.
(5): Step 54: A network access authentication status confirmation result (authentication status is unauthenticated) is sent from the network access authentication server 120 to the authentication proxy server 130.

Next, in the verification of the NW access authentication state using the NW user ID as a key in the IDP processing of FIG. 8 (2), the processing of the network access authentication server 120 in step 44 of FIG. Will be described in more detail. That is,
(1): Step 61: The network access authentication server 120 receives a network access authentication status confirmation request using the NW user ID as a key.
(2): Step 62: The IP address corresponding to the NW user ID is searched from the NW access session information management table 121.
(3): Step 63: It is determined whether or not the corresponding IP address has been acquired. If it can be obtained, the process proceeds to step 65. If it cannot be obtained, the process proceeds to step 64.
(4): Step 65: Send the network access authentication status confirmation result (authentication status is authenticated, IP address) from the network access authentication server 120 to the authentication proxy server 130.
(5): Step 64: The network access authentication server 120 sends a network access authentication status confirmation result (authentication status is unauthenticated) to the authentication proxy server 130.

NW access authentication processing for network connection and authentication request from the user terminal 100 and home gateway 110 will be described in detail with reference to FIG.
(1): Step 70: The user terminal 100 / home gateway 110 makes a connection / authentication request to the network by using an ID, a password, etc. as authentication information to the access server 150.
(2): Step 71: The access server 150 makes an authentication request to the network access authentication server 120.
(3): Step 72: The network access authentication server 120 performs user authentication. If the authentication is successful, the process proceeds to step 73. If the authentication is not successful, a response indicating that authentication is impossible is returned to the access server 150 according to FIG.
(4): Step 73: The network access authentication server 120 sends an authentication response (authentication result) to the access server 150.
(5): Step 74: The access server 150 sends a connection / authentication response (authentication result, IP address) to the user terminal 100 / home gateway 110.
(6): Step 75: The access server 150 notifies the network access authentication server 120 of the issued IP address.
(7): Step 76: The network access authentication server 120 receives the IP address, and the IP address (in FIG. 1, the operation is in FIG. 1) with respect to the corresponding NW user ID (NW X in FIG. 1) Registered IP address).

An authentication procedure in a system configuration in which a plurality of network access authentication servers are connected under one authentication proxy server will be described with reference to FIG. Only portions different from the processing procedure for linking IDP authentication and NW access authentication shown in FIG. 6 will be described in detail below.
(1): Basic pre-processing: Each time an IDP user ID is entered, the identifiers of the network access authentication servers 120X and 120Y are assigned.
(2): The ID between the user terminals 100X and 100Y and the authentication proxy server 130 is triggered by an authentication request sent from the service server (not shown) to the authentication proxy server 130 via the user terminals 100X and 100Y. IDP authentication is performed using a password or an electronic certificate, and if successful, an IDP user ID is acquired.
(3): The authentication proxy server 130 requests the network access authentication servers 120X and 120Y corresponding to the identifier to verify the network access authentication state using the source IP address of the authentication request packet as a key.
(4): The subsequent procedure is the same as step 31 to step 37 in FIG. 8 (1) or FIG. 8 (2), and the authentication proxy server 130 generates authentication result information (assertion) according to FIG. 28) Requests the user terminals 100X and 100Y to send authentication result information (assertion) to the service server (step 29), and enables authentication linkage processing.

  In the above process, after successful IDP authentication, authentication result information (assertion) is generated according to FIG. 7 (step 28), and the authentication proxy server requests the user terminal to send authentication result information (assertion) to the service server. Thus (step 29), a procedure for performing the authentication process is also possible.

  FIG. 2 shows a system when a plurality of network access authentication servers exist under one authentication proxy server 130. User A's user terminal 100X / home gateway 110X connects to the Internet, VPN, etc. via ISP X. The network access authentication server 120X of ISP X is a RADIUS server, stores NW access session information in the NW access session information management table 121X, and stores an NW user ID (NW X in FIG. 2) and a password (PWD in FIG. 2). The included NW access account is stored in the NW access account management table 122X. The network access authentication server 120X performs password-based network access authentication for the user terminal 100X of the user A, and dynamically assigns an IP address. User B's user terminal 100Y / home gateway 110Y connects to the Internet, VPN, etc. via ISP Y. The network access authentication server 120Y of ISP Y is a RADIUS server, stores NW access session information in the NW access session information management table 121Y, and stores an NW user ID (NW Y in FIG. 2) and a password (PWD in FIG. 2). The included NW access account is stored in the NW access account management table 122Y. The network access authentication server 120Y performs password access-based network access authentication for the user terminal 100Y of the user B, and dynamically assigns an IP address. The authentication proxy server 130 stores the portal user account in the IDP user management table 132. The portal user account includes information (RADIUS-X, RADIUS-Y in FIG. 2) identifying which network access authentication server (RADIUS server) each user belongs to. The other points are the same as in FIG. 1, and there are service providers (not shown) in FIG.

  In the case of the embodiment of FIG. 2, when there are a plurality of network access authentication servers under one authentication proxy server, the corresponding network access authentication server (RADIUS server) can be identified in the authentication proxy server. Therefore, the NW user ID having the same name can exist on different network access authentication servers.

Referring to FIG. 2, in the authentication procedure in the system configuration in which a plurality of network access authentication servers 120X and 120Y are connected to one authentication proxy server 130, the authentication proxy via the user terminals 100X and 100Y from the service server. In response to an authentication request sent to the server 130, authentication processing and service provision can be performed by the following procedure. The procedure will be described in detail below. That is,
(1): Basic pre-processing: The authentication proxy server 130 prepares a table for subtracting the network access authentication servers 120X and 120Y from the originating IP addresses of the user terminals 100X and 100Y. In FIG. 2, RADIUS-X and RADIUS-Y in the IDP user management table 132 are information for identifying to which network access authentication server the user A and the user B belong.
(2): The network access authentication server is specified by using the table from the IP address from the user terminal, and an authentication request is made from the authentication proxy server 130 to the network access authentication server.
(3): The step that receives this is the same processing from step 51 to step 54 or 55 in the network access authentication server 120 described in FIG.
(4): The authentication proxy server 130 generates authentication result information (assertion) by acquiring the NW user ID.
(5): Upon receiving this, the IDP authentication process is completed in step 29 of FIG.

In the above process, the authentication proxy server 130 prepares a table for subtracting the network access authentication server from the originating IP addresses of the user terminals 100X and 100Y, and sends an authentication request to the corresponding network access authentication server based on the originating IP address from the user terminal. In the above processing procedure for performing the above, it is also possible to perform the following steps in cooperation with the IDP authentication instead of the processing of (4). That is,
(1): The authentication proxy server 130 acquires the NW user ID.
(2): The authentication proxy server 130 performs IDP authentication using the IDs and passwords from the user terminals 100X and 100Y, the NW user IDs obtained thereby, and the network access authentication servers 120X and 120Y corresponding to the respective users. The authentication response information (assertion) is generated when the NW user IDs in the authentication responses are matched, and the NW user authentication and IDP authentication can be linked in step 29 of FIG. In this embodiment, NW user authentication and IDP authentication are performed in cooperation. However, when sufficient security can be ensured only by NW user authentication, only NW user authentication alone may be performed.

  FIG. 3 shows a system in the case of performing authentication using an IP address input at the time of service order as an auxiliary. FIG. 3 shows an example of password-based user authentication in which the IP address input at the time of service order is used as user account information. A plurality of user terminals (the terminals of user A and user B in FIG. 3) may be connected to the home gateway 110. The user terminal 100 / home gateway 110 is connected to the authentication proxy server 130 via the edge router 160. In the embodiment of FIG. 3, the IP address is fixedly assigned to each line. In the IP address assignment table provided in the edge router 160, the VLAN ID of the NW user ID (NW X in FIG. 3) and the fixed assignment IP address are stored. The assigned IP address is stored in the IDP user management table 133 provided in the authentication proxy server 130. The authentication proxy server 130 performs password authentication on the user terminal 100 over HTTP, and also verifies the originating IP address using the assigned IP address stored in the IDP user management table 133. The other points are the same as in FIG. 1, and there is a service provider (not shown) in the embodiment of FIG.

A single sign-on process in a system configuration in which the user terminal 100 is connected to the authentication proxy server 130 via the home gateway 110 and the edge router 160 will be described with reference to FIG.
(1): The IP address input at the time of service order is registered as user account information.
(2): In the edge router 160, an IP address is fixedly assigned to each line.
(3): In IDP authentication using an ID, password, etc. between the user terminal 100 and the authentication proxy server 130, the IP address of the user account information is used auxiliary to verify the originating IP address. Since the authentication proxy server 130 stores an IP address for each entry of the IDP user ID, it is possible to double check ID / password authentication and source IP address verification.

An embodiment in which authentication result information (assertion) issuance history is used for charging will be described with reference to FIG.
(1): [1]: When network access authentication is performed between the user terminal 100 and the network access authentication server 120 and the authentication is successful, the corresponding NW user ID in the NW access session information management table 123 of the network access authentication server 120 An IP address (dynamically assigned IP address in FIG. 4) is registered for (NW A in FIG. 4).
(2): [2] A service request is sent from the user terminal 100 to the service server 140.
(3): [3] The service server 140 transitions to [8] when the authentication status of the user can be confirmed (service provision start). If authentication cannot be confirmed, an authentication request is sent from the service server 140 to the authentication proxy server 130 via the user terminal 100.
(4): [4] The authentication proxy server 130 inquires of the network access authentication server 120 about the NW access user ID using the IP address of the authentication request as a key.
(5): [5] If there is an IDP user ID corresponding to the acquired NW access user ID, the authentication proxy server 130 is authenticated.
(6): [6] The authentication proxy server 130 manages the authentication result information (assertion) issuance history in association with “issuing service (URL)” and “issuing user (IDP user ID)” (for each service server and By user). If this is used for billing at the time of service provision, the service provider does not need to acquire billing information.
(7): [7] The authentication result information (assertion) in the authentication proxy server 130 is sent to the service server 140 via the user terminal 100.
(8): [8] The service server 140 provides the service to the user terminal 100 by receiving the authentication result information.

  According to the embodiment of FIG. 4, each service provider (SP) can authorize a service after confirming that it is a user access that has undergone regular access authentication via an access network of a communication carrier. . Accordingly, it is not necessary for the service provider to acquire billing information.

  The above processing can also be explained in the processing flow of FIG. 10. In the above processing procedure, when IDP authentication is unsuccessful, if the NW access authentication state is verified and authentication has not been completed, the service cannot be provided to the user by the same figure. It becomes processing to do. In FIG. 10, step 77 to step 85 are the same as those described so far. In step 86, the user terminal is requested to send authentication result information (assertion) to the service server. In step 87, the history is recorded in the assertion issue history table.

Further, the table contents related to the process of recording the history in the authentication result information (assertion) issuance history table will be described with reference to FIG.
(1): Every time authentication result information (assertion) is issued, a log is recorded in the authentication result information (assertion) issue history management table. In the assertion issue history table, an IDP user ID, a service server identifier, a service identifier, and a date and time are recorded. The service fee management table stores a service server identifier, a service identifier, and a service fee.
(2): When accounting information is collected for each user, the charge for each service is acquired from the service charge management table, and the service usage fee for each user is calculated based on the authentication result information (assertion) issuance history management table. calculate.

  Note that the disconnection process associated with the end of access is not shown because it is not different from the conventional operation.

  In each embodiment, the ID / password authentication method is used as a specific method of NW access authentication. However, other postfix methods such as a method using an electronic certificate, calling number authentication (dial-up connection) Or the like based on the telephone number of the user terminal or the physical port for the user terminal of the access server at the time of constant connection).

  A computer program can be created based on the above flowchart, and the program can be recorded on a recording medium or provided through a network.

  As mentioned above, the invention made by the present inventor has been specifically described based on the embodiment. However, the invention is not limited to the embodiment, and various modifications can be made without departing from the scope of the invention. Of course.

Network configuration showing authentication processing using both IDP authentication and NW access authentication System configuration when multiple network access authentication servers exist under one authentication proxy server Network configuration to explain authentication using auxiliary IP address input at the time of service order System configuration explaining an example of applying authentication result information (assertion) issuance history to accounting Authentication processing sequence for NW access authentication Authentication processing sequence from service request to service provision in authentication processing Processing flow of authentication proxy server at the time of service request Processing flow for verifying network access authentication status in authentication processing server processing at the time of service request Authentication process flow of network access authentication server at the time of service request Authentication result information (assertion) issuance / history management process flow Management table for application to authentication result information (assertion) history management and service billing Processing flow of network access authentication server during NW access authentication Configuration of a system that realizes single sign-on from a remote access user terminal according to the prior art (when the remote access base is a terminal) Configuration of a system that realizes single sign-on from a remote access user terminal according to the prior art (when the remote access base is a LAN)

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... User terminal, 110 ... Home gateway, 120 ... Network access authentication server, 130 ... Authentication proxy server, 140 ... Service server, 150 ... Access server, 160 ... Edge router

Claims (15)

A network access authentication server that authenticates network access of the user terminal, a service server that provides a service to the user terminal, and an authentication proxy server that performs authentication of the user terminal for providing the service of the service server via the network An authentication method in an authentication system formed by connecting
The authentication proxy server receiving an authentication request from the service server via the user terminal;
After the authentication proxy server completes the authentication process between the user terminal and the authentication proxy server, the IP address of the user terminal or the network access authentication server of the user of the user terminal with respect to the network access authentication server Requesting confirmation of the network access authentication status using the network user ID, which is a user ID, as a key;
When the network access authentication server receives a request from the authentication proxy server , the network user corresponds to authentication status information indicating an authentication status in the network access authentication server and an IP address that is a key in the request from the authentication proxy server the I P address that corresponds to the network user ID is a key in the request from the ID or the authentication agent server, and sending to the authentication proxy server,
The authentication agent server receives the authentication status information received from the network access authentication server and the network user ID received from the network access authentication server by requesting the network access authentication server to check with the IP address as a key or the network access authentication The server is requested to confirm the network user ID as a key, and the network IP address received from the network access authentication server is verified. If valid, an authentication response including authentication result information is sent via the user terminal. Sending to the service server;
And a service is started after verification of the authentication response at the service server is completed. A network access authentication server that authenticates network access of the user terminal, a service server that provides a service to the user terminal, and an authentication proxy server that performs authentication of the user terminal for providing the service of the service server via the network An authentication method in an authentication system formed by connecting
Providing a service to the user when the service server can confirm the authentication of the user in response to a service request from the user terminal by the user;
If the authentication of the user cannot be confirmed, sending an authentication request including a redirect address from the service server to the user terminal;
Sending an authentication request including an originating IP address from the user terminal to the authentication proxy server;
Generating authentication result information when the authentication proxy server confirms the user and sending an authentication response including the authentication result information and a redial destination address to the user terminal;
Sending an authentication response including the authentication result information from the user terminal to the service server;
Verifying the authentication result information with the service server;
Notifying the user that the service cannot be provided when the authentication result information is invalid;
When the authentication result information is valid, the service server provides a service to the user;
When the authentication proxy server has not verified the user, after the authentication process between the user terminal and the authentication proxy server is completed, the network access authentication server is requested to confirm the network access authentication status using the IP address as a key. And steps to
Searching the network access session information management table for a network user ID, which is a user ID in the network access authentication server, corresponding to the IP address of the network access authentication server;
Sending the authentication status information indicating the authentication status in the network access authentication server and the network user ID from the network access authentication server to the authentication proxy server when the corresponding network user ID can be acquired;
The authentication proxy server searches the user management table for an IDP user ID, which is a user ID in the authentication proxy server, corresponding to the acquired network user ID;
Comparing the acquired IDP user ID with the IDP user ID acquired at the time of authentication between the user terminal and the authentication proxy server;
A step of sending an authentication response including authentication result information to the user terminal when both match by the comparison;
Sending an authentication response including the authentication result information from the user terminal to the service server;
And a service is started after verification of the authentication response at the service server is completed. A network access authentication server that authenticates network access of the user terminal, a service server that provides a service to the user terminal, and an authentication proxy server that performs authentication of the user terminal for providing the service of the service server via the network An authentication method in an authentication system formed by connecting
Providing a service to the user when the service server can confirm the authentication of the user in response to a service request from the user terminal by the user;
If the authentication of the user cannot be confirmed, sending an authentication request including a redirect address from the service server to the user terminal;
Sending an authentication request including an originating IP address from the user terminal to the authentication proxy server;
Generating authentication result information when the authentication proxy server confirms the user and sending an authentication response including the authentication result information and a redial destination address to the user terminal;
Sending an authentication response including the authentication result information from the user terminal to the service server;
Verifying the authentication result information with the service server;
Notifying the user that the service cannot be provided when the authentication result information is invalid;
When the authentication result information is valid, the service server provides a service to the user;
A step of searching the IDP user management table for a network user ID corresponding to the IDP user ID acquired by the authentication proxy server when the authentication proxy server has not confirmed the user;
Requesting the network access authentication server to confirm the network access authentication state using the network user ID as a key when the network user ID is acquired;
The network access authentication server searching an IP address corresponding to the network user ID from a network access session information management table;
Sending an authentication status information indicating an authentication status in the network access authentication server and the IP address from the network access authentication server to the authentication proxy server when the corresponding IP address is acquired;
The authentication proxy server compares the acquired IP address with the originating IP address in the authentication request;
A step of sending an authentication response including authentication result information to the user terminal when both match by the comparison;
Sending an authentication response including the authentication result information from the user terminal to the service server;
And a service is started after verification of the authentication response at the service server is completed. The authentication method according to any one of claims 1 to 3,
An authentication method in an authentication system in which a plurality of network access authentication servers are connected to one authentication proxy server,
When the authentication proxy server confirms the network access authentication status from the authentication proxy server to the network access authentication server after the end of the authentication process between the user terminal and the authentication proxy server, the authentication proxy server holds Identifying a corresponding network access authentication server by an identifier identifying the network access authentication server to which the user belongs;
Requesting the network access authentication server to check the network access authentication state from the authentication proxy server;
An authentication method characterized by comprising: The authentication method according to claim 4,
Preparing a table for subtracting a corresponding authentication server from an IP address of the user terminal when the authentication proxy server accesses the network access authentication server from the authentication proxy server;
Identifying a corresponding network access authentication server from the IP address using the table;
In the authentication process, authentication by the network access server and authentication by the authentication proxy server are performed in cooperation, or instead of performing authentication by the network access server and authentication by the authentication proxy server in combination, only network access authentication is performed. The steps of
An authentication method characterized by comprising: An edge router that assigns a fixed IP address for each line, a service server that provides a service to a user terminal, and an authentication proxy server that performs authentication of the user terminal for providing the service of the service server via a network An authentication method in an authentication system formed by connecting
The authentication proxy server receiving an authentication request from the service server via the user terminal;
In the IDP authentication between the user terminal and the authentication proxy server, the authentication proxy server authenticates the user terminal, and stores the IDP user ID entry as user account information in the authentication proxy server. verifies the originating IP address the edge routers Te is to take advantage of the IP address fixedly assigned for each line, if valid, the authentication result inclusive authentication response information, via said user terminal Sending to the service server ;
It has a, authentication method characterized by the service is started after verifying the completion of authentication response in said service server. A network access authentication server that authenticates network access of the user terminal, a service server that provides a service to the user terminal, and an authentication proxy server that performs authentication of the user terminal for providing the service of the service server via the network Authentication system,
The authentication proxy server is
Means for receiving an authentication request from the service server via the user terminal;
After the authentication process between the user terminal and the authentication proxy server is completed, the network user who is the IP address of the user terminal or a user ID in the network access authentication server of the user terminal user with respect to the network access authentication server Means for requesting confirmation of the network access authentication status using the ID as a key;
The authentication status information received from the network access authentication server and the network access ID received from the network access authentication server by requesting the network access authentication server to confirm using the IP address as a key or the network user ID to the network access authentication server Means for verifying the IP address received from the network access authentication server by requesting confirmation using the key , and if valid, means for sending an authentication response including authentication result information to the service server via the user terminal When,
With
When the network access authentication server receives a request from the authentication proxy server , the network user corresponds to authentication status information indicating an authentication status in the network access authentication server and an IP address that is a key in the request from the authentication proxy server the ID or I P address that corresponds to the network user ID is a key in the request from said authentication agent server, it means for sending to the authentication proxy server,
And a service is started after the verification of the authentication response in the service server is completed. A network access authentication server that authenticates network access of the user terminal, a service server that provides a service to the user terminal, and an authentication proxy server that performs authentication of the user terminal for providing the service of the service server via the network An authentication proxy server in an authentication system formed by connecting
Means for receiving an authentication request from the service server via the user terminal;
After the authentication process between the user terminal and the authentication proxy server is completed, the network user who is the IP address of the user terminal or a user ID in the network access authentication server of the user terminal user with respect to the network access authentication server Means for requesting confirmation of the network access authentication status using the ID as a key;
The authentication status information received from the network access authentication server and the network access ID received from the network access authentication server by requesting the network access authentication server to confirm using the IP address as a key or the network user ID to the network access authentication server Means for verifying the IP address received from the network access authentication server by requesting confirmation using the key , and if valid, means for sending an authentication response including authentication result information to the service server via the user terminal When,
An authentication proxy server comprising: A network access authentication server that authenticates network access of the user terminal, a service server that provides a service to the user terminal, and an authentication proxy server that performs authentication of the user terminal for providing the service of the service server via the network An authentication proxy server in an authentication system formed by connecting
Means having a user account including an IDP user ID that is a user ID in the authentication proxy server and a network user ID that is a user ID in the network access authentication server;
After the authentication process between the user terminal and the authentication proxy server is completed, the network access authentication server is requested to confirm the network access authentication state using the originating IP address in the authentication request packet from the user terminal as a key. Means,
Means for receiving, from the network access authentication server, a network access authentication status confirmation result including a network user ID if the network access authentication status has been authenticated;
A means for notifying the user that the service cannot be provided when the network access authentication status cannot be confirmed;
Means for searching an IDP user ID corresponding to the network user ID obtained by reception from means having the user account;
Means for determining whether or not an IDP user ID has been acquired;
Means for notifying the user that service cannot be provided when it cannot be obtained;
Means for comparing the acquired IDP user ID with the IDP user ID acquired at the time of authentication between the user terminal and the authentication proxy server;
Means for determining whether or not the IDP user IDs match in the comparison;
A means for notifying the user that the service cannot be provided if they do not match;
And it means to generate an authentication result information if they match,
An authentication proxy server comprising: A network access authentication server that authenticates network access of the user terminal, a service server that provides a service to the user terminal, and an authentication proxy server that performs authentication of the user terminal for providing the service of the service server via the network An authentication proxy server in an authentication system formed by connecting
Means having a user account including an IDP user ID that is a user ID in the authentication proxy server and a network user ID that is a user ID in the network access authentication server;
Means for searching a network user ID corresponding to the IDP user ID acquired at the time of authentication from the means having the user account after the end of the authentication process between the user terminal and the authentication proxy server;
Means for determining whether the network user ID has been acquired;
A means for notifying the user that the service cannot be provided if it cannot be obtained;
Means for requesting the network access authentication server to confirm the network access authentication state using the network user ID as a key when the authentication proxy server is able to acquire the network access authentication server;
Means for receiving a network access authentication status confirmation result including an IP address if the authentication surrogate server includes the network authentication status and has been authenticated from the network access authentication server;
Means for determining whether the network authentication status has been completed;
A means of notifying the user that the service cannot be provided if not authenticated,
If authenticated, means for comparing the IP address obtained from the network access authentication server with the originating IP address of the authentication request packet;
Means for determining whether or not the IP addresses match,
A means for notifying the user that the service cannot be provided if they do not match;
Means for generating authentication result information if they match,
An authentication proxy server comprising: In the authentication proxy server according to any one of claims 8 to 10,
Means for holding an identifier for identifying a network access authentication server to which the user belongs;
Means for determining a network access authentication server to request confirmation by the identifier;
An authentication proxy server comprising: An edge router that assigns a fixed IP address for each line, a service server that provides a service to a user terminal, and an authentication proxy server that performs authentication of the user terminal for providing the service of the service server via a network An authentication proxy server in a connected authentication system ,
Means for receiving an authentication request from the service server via the user terminal;
In IDP authentication with the user terminal , the user terminal is authenticated, and the edge router stored in the authentication proxy server as user account information for each IDP user ID entry is fixed for each line. to take advantage of the IP address assigned to validate the source IP address, if effective, means for sending an authentication result authentication response including the information, to the service server through the user terminal,
An authentication proxy server comprising:   The program for making a computer perform each step of any one of Claims 1 thru | or 6. The program for functioning a computer as each means of any one of Claims 7 thru | or 12 . The computer-readable recording medium which recorded the program of Claim 13 or 14 .

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