JP2003141081A - Network system, server computer, program and log-in method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve convenience of a user accessing to a plurality of Web systems connected to an in-house LAN. SOLUTION: This in-house LAN system is provided with Web servers 41, 51, 61 of traveling fare adjustment system 4, a production management system 5 and a work management system 6, an employee PC 4 and a portal server 1 on the in-house LAN 2. The portal server 1 includes a personal portal DB 11 for holding log-in information for log-in to the respective servers 41, 51, 61, and an in-house portal function 10 for performing user authentication processing when an access request is given from the employee PC 3 or the other PC, retrieving the personal portal DB 11 on the basis of a user's user ID permitted to log-in as a result of user authentication, taking out the log-in information of the system frequently used by the employee, and acting for log-in to the Web servers 41, 61 of the system.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a network system in which a plurality of business processing systems are constructed on a network, a server computer, a program, and a login method.

[0002]

2. Description of the Related Art At present, a network system in a company is often constructed as a cooperative company LAN system in which a plurality of Web systems are connected via a local area network (hereinafter referred to as LAN).

As shown in FIG. 9, a conventional corporate LAN system includes a computer 3 managed by an employee (hereinafter referred to as an employee PC 3), a travel expense settlement system 4, a production management system 5, and a work management system 6, for example. Multiple We, such as
b system is connected via LAN2. The travel expense settlement system 4 is provided with a Web server 41, which authenticates the user who requested the access and permits the user to access the system.
Similarly, the other production management system 5, work management system 6, etc. are also provided with the Web servers 51, 61, etc., and the user who has requested the access is authenticated and then accessed to the own system. Allow An input device 31 and a display device 34 are connected to the employee PC 3. Browser software 32 (hereinafter referred to as browser 32) is installed in the main body of the employee PC 3, and the URL input from the input device 31 is stored in the storage unit 3.
3 (memory or hard disk device).

In this company LAN system, when an employee uses a certain Web system, for example, the travel expense settlement system 4, the employee uses the URL of the Web server 41 of the travel expense settlement system 4 in advance for his personal computer (employee). A personal computer that has been saved on the employee PC3) and started when an employee uses a certain system (employee PC3)
When you specify the URL of the system in the browser 32 of
As shown in FIG. 10, the user authentication screen 91 is displayed from the Web server 41 ().

Then, the user ID and password for this system are input (designated) in the user ID input field 92 and the password input field 93 of this user authentication screen 91.
Then, by clicking the OK button 94 (), the travel expense settlement system 4 can be logged in. As a result, the top menu screen 95 of the travel expense settlement system 4 concerned is displayed (), and the travel expense settlement operation can be performed from this top menu screen 95. become.

When accessing the other production management system 5, work management system 6, etc., by repeating the same input operation (operation) as described above, it becomes possible to log in to a desired Web system and use the system.

[0007]

The conventional corporate LAN system as described above has the following problems. (1) In order to store the URL of the system to be used on your personal computer, if you use a personal computer other than your own, such as when using another person's personal computer, UR
There is a problem that L cannot be understood and work cannot be performed. (2) In corporate LAN systems, the user ID and password are often different for each system, and in this case, the user himself / herself remembers what kind of user ID and password he / she uses to log in. I need to put it. (3) User I when accessing multiple systems
There is a problem that the work of inputting the D and password is required many times, and it takes a lot of time to use the desired system.

The present invention has been made to solve such a problem, and it is possible to improve the convenience of a user who accesses a plurality of business processing systems connected to a network. The purpose is to provide a program and login method.

[0009]

In order to achieve the above object, the network system of the present invention constructs a plurality of business processing systems on a network, and each business processing system is a business for operating a computer on the network. A user for at least one business processing system existing in the network, in a network system including an authentication server that performs user authentication processing for a user who wishes to use the processing system through the network and permits login to the own system. A login information database holding login information of the user and a user authentication processing means for performing a user authentication process for the user who has requested an access to log in to the business processing system through the network. And said you Result of the user authentication process by the authentication processing unit, searches the login information database based on the user ID of the person who wants to use that permit the login, extracts the login information of at least one business processing system,
Login agent means for performing login to the authentication server of the relevant business processing system and each authentication server of the business processing system are provided, and the login processing is automatically performed based on the login information included in the login request from the login agent means. The automatic log-in means for executing the program is provided.

The server computer of the present invention is a server computer connected through a network to a computer operated by a user who desires to use a desired system from a plurality of business processing systems constructed on the network. In the above, there is a login information database that holds login information of users to at least one business processing system existing in the network, and an access request for logging in to the business processing system through the network from the user who wants to use. If the user wishes to use the user, the login information database is searched based on the user ID of the user who has permitted the login as a result of the user authentication processing means for performing the user authentication processing for the user and the user authentication processing by the user authentication processing means. And at least one Removed login information of the business processing system is characterized by comprising a login substituting means for substituting the login to the authentication server of the corresponding business processing system.

The program of the present invention is stored in a computer operated by a user who desires to use a desired system from a plurality of business processing systems constructed on a network and a server computer connected via the network. In a program for executing a process, the server computer causes a login information database that holds login information of a user to at least one business processing system existing in the network; If there is an access request to log in to the system,
A user authentication processing unit that performs a user authentication process for the user who wants to use, and a user authentication process performed by the user authentication processing unit. It is a program that takes out login information of one business processing system and causes it to function as a login surrogate means for performing login on behalf of the authentication server of the relevant business processing system.

According to the login method of the present invention, a plurality of business processing systems are constructed on a network, and each business processing system authenticates a user who wishes to use a business processing system operating a computer on the network through the network. In the login method in the network system including the authentication server that permits the login to the own system,
When there is an access request for logging in to the business processing system through the network, a step of performing a user authentication process for the user who wants to use, and a result of the user authentication process is based on the user ID of the user who has permitted the login. To search the login information database that holds the login information of the user to at least one business processing system existing in the network, retrieve the login information of at least one business processing system, and store the login information in the authentication server of the corresponding business processing system. The method is characterized by including a step of performing login and a step of executing login processing based on login information included in the login request received by the authentication server in the relevant business processing system.

According to the present invention, when the user requesting the access requests the server computer to log in to the business processing system through the network, the user authentication process is performed for the user requesting the use, and the result of the user authentication process is the login. Since the login information for the business processing system that is frequently used by the user who has permitted is taken out and the login to the authentication server of the relevant business processing system is performed on behalf of the user, the desired information can be obtained from a computer other than the user At least one business processing system can be accessed. In addition, the user does not need to remember login information (user ID, password, etc.) for each business processing system. Further, the user does not need to log in many times for each business processing system to be used.

By registering the message from the business processing system side in association with the login information for each business processing system of the login information database, the user who wants to use can specify the system to be used by the person who wants to use it. A message from the system side can be displayed, and the business processing system side can prompt the user to log in.

That is, according to the present invention, since a predetermined server computer on the network is provided with a portal function for accessing a plurality of business processing systems, other than those mainly used by the user himself / herself. A desired business processing system can be accessed from a computer. In addition, the user does not need to remember login information (user ID, password, etc.) for each business processing system. Further, the user does not need to log in many times for each business processing system to be used, so that the number of operations can be reduced and the trouble of the user can be eliminated.

As a result, the convenience of the user who accesses a plurality of business processing systems connected to the network can be improved.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a diagram showing the configuration of a corporate LAN system of a first embodiment of a network system according to the present invention.

As shown in FIG. 1, the in-company LAN system according to the first embodiment has a computer 3 (hereinafter referred to as an employee PC 3) mainly used (managed) by an employee who is a user and, for example, travel expenses. A plurality of business processing systems (Web systems) such as a settlement system 4, a production management system 5, and a work management system 6 and a portal server 1 serving as a gateway to each Web system are connected via a corporate LAN 2 as a network. Is configured.

The portal server 1 is installed with software for realizing the in-company portal function 10, and a personal portal database 11 (hereinafter referred to as a personal portal DB 11) is constructed. Personal portal DB
11 stores and manages login information such as employee user IDs and passwords for each system.

The in-company portal function 10 is the user ID of the employee who has requested access to the portal server 1,
User authentication is performed using the personal portal DB 11 based on the password, information of the system frequently used by the logged-in employee) is retrieved, and the information is returned to the corresponding browser as a company portal page. Then, the in-company portal function 10 sends information for logging in on behalf of the employee to at least one system selected from the available system list displayed on the in-company portal page. Log in to the web system. That is, the in-company portal function 10 acts as a proxy for login to a plurality of authentication servers.

The travel expense settlement system 4 is provided with a Web server 41 as an authentication server. This Web server 41 has an automatic login function, and the Hyper Text Transfe from the corporate portal function 10 of the portal server 1 is used.
After authenticating the user with a user ID and password in a predetermined format transferred by r Protocol (hereinafter referred to as "http"), the user is permitted to access the system.

The production management system 5 is provided with a Web server 51 as an authentication server. The Web server 51 has an automatic login function, and after performing user authentication with a user ID and password in a predetermined format transferred by http from the in-company portal function 10 of the portal server 1, Allow access to the system.

The work management system 6 is provided with a Web server 61 as an authentication server. This Web server 61 has an automatic login function, and authenticates the user with the user ID and password in a predetermined format transferred from the corporate portal function 10 of the portal server 1 at http. Allow access to the system.

An input device 31 such as a keyboard and a mouse, a display device 34 such as a CRT monitor and LCD are connected to the main body of the employee PC 3. The employee PC 3 has a CPU, a memory such as a RAM and a ROM, and hardware such as a hard disk device in the main body. Browser software 32 (hereinafter referred to as browser 32), which is software for browsing the Web, is stored in the hard disk device.
Is installed. Various URs input from the input device 31 by the URL storage function of the browser 32
L is stored in the storage area 33 in the hard disk device. A login information management table 70 is set in the personal portal DB 11.

As shown in FIG. 2, in the login information management table 70, the URL of the system, the user ID, and the password are set in association with the system name.

For example, the URL of the travel expense settlement system 4 is http //: ryohi / index.html, and the user ID is tar.
o1 and xxxx1 etc. are set as the password.

The operation of the corporate LAN system according to the first embodiment will be described below with reference to FIGS.

In the case of the corporate LAN system of the first embodiment, as shown in FIG. 3, the employee who uses the corporate portal function 10 of the portal server 1 is the corporate LAN 2
URL of the portal server 1 from the screen of the started browser 32 by starting the browser 32 from the employee's PC 3 connected to the computer or another PC connected to the corporate LAN 2.
Is specified. As a result, the user authentication screen is displayed on that screen.

When the user ID and password for the corporate portal function 10 are specified on the user authentication screen displayed on the screen of the browser 32, the corporate portal function 1
0 can be logged in (S101 in FIG. 4), and the corporate portal page 81 is displayed on the screen of the browser 32 (S10).
2).

When the in-company portal function 10 is used for the first time, the information registration button 82 on the displayed in-company portal page 81 is clicked to perform information registration processing to the personal portal DB 11 (S103). Personal portal DB1
The information to be registered in 1 is login information such as a system name of a frequently used system, a URL, a system user ID, and a system password. The login information is displayed by clicking the information registration button 82. Input from each item column on the screen 83 to perform registration processing to the personal portal DB 11. In this example, travel expense clearing system 4, production management system 5, work management system 6
Register login information about

From the next time onward, employees who use the in-company portal function 10 will be employee PCs connected to the in-company LAN 2.
3 or another PC connected to the corporate LAN 2 activates the browser 32, specifies the URL of the portal server 1 in the same manner as above, and specifies the user ID and password to log in to the corporate portal function 10 ( S2 in FIG.
01).

When the login information for each system is already registered in the personal portal DB 11, the in-company portal function 10 searches the personal portal DB 11 based on the user ID and displays the registered "list of frequently used systems". The data for doing so is acquired (S202), a "list of frequently used systems" is generated from the data, and displayed on the corporate portal page 81 (S203).

In this case, in the in-company portal page 81, in order to select the name 84 of the frequently used registered system (travel expense clearing system, production management system, work management system, etc.) and the system to be logged in. Check box 85 and a GO button 86 indicating that the selection of the system has been decided are displayed. Further, information such as user IDs and passwords of the respective systems is also held on the screen as hidden items.

From the “List of Frequently Used Systems” on the company portal page 81, the employee can check the check box 85 of the travel expense clearing system 4 and the work management system 6, for example.
If you click (select) and click the GO button 86 (Yes in S204), the in-company portal function 10
For the URL of the selected Web system, the login information such as the user ID and password of the corresponding Web system is converted into a predetermined transfer format, and ht
At tp, the data are simultaneously transferred to the corresponding systems (S205).

Corporate LAN 2 corresponding to the transferred URL
The above Web server, that is, the Web servers 41, 61, etc., operates the automatic login function, and acquires the login information (user ID, password) transferred from the portal server 1 via the corporate LAN 2 at http. (S206).

Then, for example, the Web server 41 performs an authentication process on the acquired login information (user ID, password) as to whether or not the login can be permitted as a travel expense clearing system. Then, as a result of the authentication processing, when the login information (user ID, password) can correctly permit the login, the top menu screen of the travel expense clearing system 4 is displayed on the employee's browser screen (S207). The employee can use the travel expense clearing system 4 displayed on the browser screen.
From the top menu screen of, you will be able to settle travel expenses.

Further, for example, the Web server 61 carries out an authentication process as to whether or not the login information (user ID, password) acquired can be permitted to be logged in as the work management system. Then, as a result of the authentication processing, if the login information (user ID, password) can correctly permit the login, the top menu screen of the work management system 6 is displayed on the employee's browser screen. The employee will perform work information input processing from the top menu screen of the work management system 6 displayed on the browser screen.

The details of the automatic login function are as follows for each system.
Although different depending on the authentication method, the common function of the automatic login function does not require the input of the user ID and password from the user authentication screen of each system, and the user ID and password can be acquired from the corporate portal function 10.

In this way, the in-company LA of the first embodiment is
According to the N system, the portal server 1 having the in-company portal function 10 is set up on the in-company LAN 2, and the system name, URL, user ID, password, etc. of a frequently used system are set in the personal portal DB 11 of the portal server 1.
Since the employee can log in to one or more Web systems he / she desires by accessing the portal server 1 almost simultaneously (simultaneously), the employee can
UR to portal server 1 (company portal function 10)
If you only remember L, user ID and password,
The desired Web system can be used from one's personal computer connected to the corporate LAN 2 or another personal computer.

In addition, by managing the user ID and password for each system in the personal portal DB 11, the employee who is the user has a different user ID for each system.
A desired Web system can be used without remembering the password.

Further, by using the in-company portal page and the automatic login function, the login to each Web system can be automated, so that the employee can use the in-company portal function 1
By simply inputting the user ID and password when logging in to 0, there is no need to input the user ID and password thereafter, the number of operations can be reduced, and the trouble of inputting such information can be eliminated.

As a result, it is possible to improve the convenience of the employee who accesses a plurality of Web systems (travel expense settlement system 4, production management system 5, work management system 6, etc.) connected to the corporate LAN 2.

Next, the in-company LAN system of the second embodiment according to the present invention will be described with reference to FIG. The hardware configuration of the corporate LAN system of the second embodiment is the same as that of the first embodiment. In the corporate LAN system of the second embodiment, a transmission format management table 71 (hereinafter referred to as an IF management table 71) as shown in FIG. 6 is set in the personal portal DB 11 of the portal server 1 to transfer individual Web systems. Keep the format.

In the IF management table 71, when the system to be used is specified from the company portal page 81, h
A communication format (transfer format) transmitted at ttp is defined for each system.

In this example, GET is specified as the transfer format of the travel expense production system 4, and POST is specified as the password, and both the user ID and password are posted as the transfer formats of the production management system 5 and the work management system 6. Is specified.
As a result, the login format can be set separately for each Web system.

That is, in a certain Web system, for example, the travel expense settlement system 4, etc., the user ID can be specified by GET and the password can be designated by POST. Individual transfer such as transmission can be performed for each business processing system.

As described above, the in-house LA of the second embodiment is
According to the N system, since the portal server 1 is provided with the IF management table 71, the login format can be set for each individual Web system (business processing system).
It is possible to improve the degree of freedom in adding a business processing system in the corporate LAN system. Also, security on the network is improved by changing the transfer format for each system.

Next, a third embodiment according to the present invention will be described with reference to FIGS. FIG. 7 is a diagram showing a configuration of a corporate LAN system of a second embodiment of the network system according to the present invention, and FIG. 8 is a diagram showing a message management table set in the portal server of the corporate LAN system of FIG. . In addition, the company LA of the first embodiment
The same components as those in the N system are designated by the same reference numerals and the description thereof will be omitted.

In the third embodiment, a message for accessing the portal server 1 from a computer having each Web system such as the travel expense clearing system 4, the production management system 5 and the work management system 6 to register a message to the user. A registration function 12 is prepared. The message management table 72 is set and held in the personal portal DB 11 of the portal server 1. The message registration function 12 registers the user ID, the system name, and the message in the message management table 72 set in the personal portal DB 11 of the portal server 1.

As shown in FIG. 8, the system name, URL, and message are registered in the message management table 72 for each individual user (user ID).

In this example, the content "travel expense payment approval is required" is registered as a message from the travel expense payment system.

The contents of this message are transferred to the PC of the user and displayed as one of the display information of the company portal page 81. This makes it possible to know whether any event has occurred in each web system before automatically logging in to each web system.

For example, when an approval request is generated in the work management system 6, the approval requester of the work management system operates the message registration function 12 by accessing the portal server 1 from his / her own PC through the corporate LAN 2. Let
A message to that effect is registered in the message management table 72.

As a result, it is understood that the user who needs the approval action needs to perform the approval action in the work management system 6 only by displaying the in-company portal page 81 when logging in to the portal server 1. .

Therefore, as the user, the check box 85 of the company portal page 81 is requested to log in to the work management system 6 in order to perform this approval act.
Will be checked.

In this example, the portal server 1 is provided with the message registration function 12, but in addition to this, individual We
The message registration function 12 may be provided in the system b, and the message may be transferred to the portal server 1 for registration.

As described above, the in-house LA of the third embodiment is
According to the N system, since the portal server 1 is provided with the message registration function 12 and the message management table 72, the request contents or login request contents to the user from each Web system side are registered, and the user who does not know anything can register the contents. Only by displaying the in-company portal page 81, it is possible to know that there is a business request from a certain Web system, and it is possible to improve both the convenience of the user and the convenience of each business processing system.

The present invention is not limited to the above embodiment. Software in the above embodiment (internal company portal function 10, message registration function 12,
The personal portal DB 11 or the like) may be stored in a computer-readable storage medium such as a flexible disk, or may be transmitted as software (program) alone. In this case, the processing in each embodiment can be performed by the computer reading the software (program) stored in the storage medium or by downloading and installing the software from a site (server) on the LAN or the Internet.

That is, the software (program) in the present invention is not limited to the one stored in the storage medium independent of the computer, but includes the one distributed through a transmission medium such as LAN or Internet.

As the storage medium, in addition to the above flexible disk, for example, a magnetic disk, an optical disk (C
If the storage medium is a computer-readable storage medium capable of storing a program, such as a D-ROM, a CD-R, a DVD), a magneto-optical disk (MO, etc.), a semiconductor memory, etc., the storage format is in any form. May be.

An OS (operating system) running on the computer based on the instructions of the program installed in the computer from the storage medium.
Alternatively, database management software, MW (middleware) such as network software, or the like may execute a part of each processing for realizing the present embodiment.

Further, the storage medium is not limited to a medium independent of the computer, but includes a storage medium in which a program transmitted via a LAN or the Internet is downloaded and stored or temporarily stored. Further, the number of storage media is not limited to one, and a case in which the processing in this embodiment is executed from a plurality of media is also included in the recording medium in the present invention, and the media configuration may be any configuration.

The computer executes each processing in the present embodiment based on the program stored in the storage medium, and is a device such as a personal computer or a system in which a plurality of devices are network-connected. Any configuration such as

The computer is not limited to a personal computer, but also includes an arithmetic processing unit, a microcomputer, and the like included in information processing equipment, and is a generic term for equipment and devices that can realize the functions of the present invention by a program. .

[0065]

As described above, according to the present invention, by providing the server computer that acts as a proxy for the login procedure of the user who logs in to a plurality of business processing systems on the network, the user can use it. It is possible to access at least one desired business processing system from a computer other than the one that is installed. In addition, the user does not need to remember login information (user ID, password, etc.) for each business processing system. Further, the user does not need to log in many times for each business processing system to be used. As a result, the convenience of the user who accesses a plurality of business processing systems connected to the network can be improved.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a corporate LAN system of a first embodiment according to the present invention.

FIG. 2 is a diagram showing a login information management table set in a portal server of the corporate LAN system of FIG.

FIG. 3 is a diagram showing a login procedure in the corporate LAN system of FIG.

FIG. 4 is a flowchart showing a process of registering login information in a portal server.

5 is a flowchart showing a login procedure in the corporate LAN system of FIG.

FIG. 6 is a diagram showing an IF management table set in a portal server of the corporate LAN system of the second embodiment.

FIG. 7 is a diagram showing a configuration of a corporate LAN system of a third embodiment according to the present invention.

8 is a diagram showing a message management table set in a portal server of the corporate LAN system of FIG.

FIG. 9 is a diagram showing a configuration of a conventional corporate LAN system.

FIG. 10 is a diagram showing a login procedure in a conventional corporate LAN system.

[Explanation of symbols]

2 ... Corporate LAN, 3 ... Employee PC, 4 ... Travel expense settlement system, 5 ... Production management system, 6 ... Work management system,
10 ... In-company portal function, 11 ... Personal portal BD,
12 ... Message registration function, 41, 51, 61 ... Web
server.

Claims (7)

[Claims] 1. A plurality of business processing systems are constructed on a network, and each business processing system performs a user authentication process through the network to a user who wishes to use the business processing system operating a computer on the network, and the self system In a network system including an authentication server that permits login to a user, a login information database that holds login information of a user to at least one business processing system existing in the network, and a user who wishes to use the login information database through the network. When there is an access request for logging in to the business processing system, a user authentication processing unit that performs user authentication processing for the user who wants to use, and a result of the user authentication processing by the user authentication processing unit,
A login agent that searches the login information database based on the user ID of the user who has permitted the login, retrieves login information of at least one business processing system, and performs login on behalf of the login to the authentication server of the business processing system. A network provided with each authentication server of the business processing system, the automatic login means automatically executing login processing based on login information included in a login request from the login proxy means. system. 2. The network system according to claim 1, wherein the login surrogate means is a transmission format management in which a transmission format of a communication protocol for transmitting login information to the authentication server of the business processing system is set for each system. A table and means for, upon login, referring to the transmission format management table, generating the login information in a transmission format for the relevant business processing system and transmitting it to the authentication server of the relevant business processing system. Network system. 3. The network system according to claim 1, wherein when the user system is not registered as a result of searching the login information database based on the user ID of the user who has permitted the login by the user authentication processing unit. , Means for urging the user to register the usage system in the login information database, and means for registering information on the usage system input from the computer of the user in the login information database. A network system characterized by the above. 4. The network system according to claim 1, further comprising message registration means for registering a message from the business processing system side in association with login information for each business processing system of the login information database. And network system. 5. A server computer connected via a network to a computer operated by a user who desires to use a desired system from a plurality of business processing systems constructed on the network. A login information database that holds login information of users to at least one existing business processing system; and if there is an access request from the applicant for login to the business processing system through the network, the use User authentication processing means for performing user authentication processing for the desired person, and the result of the user authentication processing by the user authentication processing means,
A login agent that searches the login information database based on the user ID of the user who has permitted the login, retrieves the login information of at least one business processing system, and performs the login on behalf of the authentication server of the corresponding business processing system. A server computer characterized by being provided. 6. A computer operated by a user who desires to use a desired system from among a plurality of business processing systems constructed on a network and a server computer connected via the network to execute the process. In the program, the server computer, a login information database that holds login information of a user to at least one business processing system existing in the network, and a user who wishes to use the server to log in to the business processing system through the network. When there is an access request for user authentication processing means for performing a user authentication processing for the user, the result of the user authentication processing by the user authentication processing means,
The login information database is searched based on the user ID of the user who has permitted the login, the login information of at least one business processing system is retrieved, and the function as a login proxy means for performing login on behalf of the authentication server of the corresponding business processing system Program to let. 7. A plurality of business processing systems are constructed on a network, and each business processing system performs a user authentication process through the network to a user who wishes to use the business processing system operating a computer on the network, and the self system In a login method in a network system including an authentication server that permits login to a user, when the user requesting access to log in to the business processing system through the network, user authentication is performed for the user. And a login information database that holds the login information of the user to at least one business processing system existing in the network based on the user ID of the user who is permitted to log in as a result of the user authentication process. Search and Based on the login information included in the login request received by the authentication server in the relevant business processing system, the step of taking out login information of at least one business processing system and performing login on behalf of the relevant business processing system to the authentication server. And a step of executing a login process.