JP2001156843A - System and method for ip address management - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an IP address management system which efficiently assigns IP addresses to users managed on a server. SOLUTION: A device 1 on the client side is provided with an address imparting part 13 which holds address imparting data, a user name input function part 11 which receives a user name, and an address retrieval function part 12 which performs address assignment of the server on the basis of data of the address imparting part 13 by the inputted user name. A device 2 on the server side is provided with an address assignment function part 21 which performs retrieval by a received user name, and an address management table 22 which transmits an IP address to the address imparting part 13. A user can user the same IP address in any client, and network security is imparted to each user by a firewall, and the user can set an unused IP address as the address of user's own terminal to give it to a client.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an IP address management system and an IP address management method.
For users managed on the server, dynamic or fixed,
IP that assigns IP (Internet Protocol) address
The present invention relates to an address management system and an IP address management method.

[0002]

2. Description of the Related Art Conventionally, an IP address management system and an IP address management method generally use a DHCP (Dynamic Ho
st Configuration Protocol) server. In the address management table of this conventional IP address management system and IP address management method, a client and an IP address are managed as a pair, or a server manages the IP addresses of a plurality of clients collectively.

[0003] The IP address management system and the IP address management method of the prior art 1 having such a configuration operate as follows. That is, I
A P address is assigned, or an IP address managed by a server is assigned to a client indefinitely.

[0004] The following are similar examples in the technical field similar to the present invention. JP-A-9-98190 of Conventional Example 2
The “address device for dynamic address assignment method” in the Japanese Patent Publication translates an address assigned on the server from a client dummy address on the server to an address managed on the server.

[0005] In the "Network system and network management method" of Japanese Patent Application Laid-Open No. Hei 10-13443 of Prior Art 3, a network management manager obtains client information from an address assigned to a client by a DHCP server.

[0006] In the "teleconference system" of JP-A-10-229394 of prior art 4, a network host assigns an address to a communication terminal. For this reason, a user and a group are set in the address assigned to the client on the server.

In an information display system disclosed in Japanese Patent Application Laid-Open No. H11-110316 of Conventional Example 5, an address of an information display terminal is set from a server, and a user and a group are set to addresses assigned on the server.

[0008] The "network management system" of JP-A-11-122283 of the prior art 6 notifies the network management system of the address assigned by the DHCP server to the client, and the network management system makes a diagnosis.

[0009]

However, the above-mentioned prior art has the following problems. First, the first problem of the first conventional example is that since an IP address is assigned to a client, security cannot be set for each user by a firewall. The reason is,
This is because the client and the IP address are managed in pairs. A second problem is that security cannot be set on a group basis by a firewall because a client is unspecified from an IP address managed by a server. The reason is that an IP address managed by the server is unspecified and assigned to the client.

In each of the conventional examples 2 to 6, addresses allocated to terminals such as clients, communication terminals, and information display terminals are managed on the server. As described above, since the address assigned on the server is assigned to the terminal, there is a problem that a user or a group cannot be identified.

An object of the present invention is to provide an IP address management system and an IP address management method for efficiently assigning an IP address to a user managed on a server.

[0012]

In order to achieve the above object, in the IP address management system according to the first aspect of the present invention, a client-side device inputs an address assigning unit for holding address assigning data and a user name. A user name input function unit to perform address assignment of the server based on the data of the address assigning unit with the input user name. It is characterized by comprising an address assignment function unit for searching by the received user name and an address management table for transmitting the IP address to the address assignment unit via the address search function unit on the client side.

The address management table is a table in which data for managing a user name, a group name, and an IP address are registered. The address assignment unit on the client side is provided with an address search function unit on the server side. May be set to the address of the terminal itself.

According to a fourth aspect of the present invention, in the IP address management method, a step of inputting a user name from the client side (S
1) checking a user name in the management table for the input user name (S2);
A step (S3) of checking whether an address is registered, a step (S4) of checking whether a group is registered, and an IP of the group when the group is registered in the step (S4). The step (S6) of checking whether there is a free address, and if the group has no free IP address in the step (S6), the processing of the flow is terminated. And a step (S7) of giving an address.

In the above step (S2), if the user name does not exist in the management table, the step (S5) of unreachable connection is executed and the process is terminated.
If an address has been registered, an address assignment step (S7) is executed. If an IP address has not been registered in the step (S3), a step (S4) is executed. If it has not been registered, it is advisable to execute the connection impossible step (S5) and end the processing.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of an IP address management system and an IP address management method according to the present invention will be described in detail with reference to the accompanying drawings. 1 and 2
FIG. 1 shows an embodiment of an IP address management system and an IP address management method according to the present invention.

In FIG. 1 showing an example of a block configuration of the present embodiment, an IP address management system and an IP address management method are implemented by a client-side device 1, for example, a computer (PC1), and a server-side device 2, for example, PC2. Be composed.

The client PC 1 is further subdivided into a user name input function unit 11 and an address search function unit 1.
2, and an address assigning unit 13. Also,
The server PC 2 includes an address assignment function unit 21 and an address management table 22.

The user name input function unit 11 includes, for example, a display for displaying the input user name and an operation unit for performing an input operation. The address search function unit 12 performs server address assignment based on the data of the address assignment unit 13 using the user name input by the user name input function unit 11. The address assignment unit 13 of the client sets the address received from the address search function unit 12 of the server as the address of its own terminal.

The address assignment function unit 21 of the server comprises:
The address management table 22 is searched using the user name received from the address search function unit 12 of the client, and the IP address is transmitted to the address assignment unit 13 via the address search function unit 12 of the client.

The address management table 22 includes a user name,
Data for managing group names and IP addresses
It is a registered table. A configuration example of the address management table is shown below. The following configuration example 1 is a relation table between a user name and a group or an IP address, and configuration example 2 is a relation table between a group name, an IP address, and a use state.

[Configuration Example 1] User group IP address A IP1 B IP2 CG1

[Configuration example 2] Group IP address usage status G1 IP3 used G1 IP4 unused

(Explanation of Operation) Next, the operation of the present embodiment will be described in detail with reference to FIGS. FIG.
6 is a flowchart illustrating an operation example.

(Processing Procedure of Flowchart) A user name is input from the user name input function unit 11 (step S).
1). It is checked whether or not the input user name has a user name in the management table (S2). If the user name does not exist in the management table (S2 / N), the connection is not allowed (S5), and the process is terminated.

If a user name exists in the management table (S2 / Y), it is checked whether or not an IP address has been registered (S3). If not, (S2 / Y)
3 / N), it is checked whether or not the group is registered (S4). If the group is not registered (S
4 / N), the connection is not allowed (S5), and the process ends.

If the group is registered (S4 /
Y), it is checked whether there is a vacancy in the group IP address (S6), and if there is a vacancy (S6 / Y),
The process of address assignment (S7) is performed and the process ends. If there is no free space (S6 / N), this flowchart ends.

(Processing Procedure of Management System) First, a user name is input (step S1). The user name input from the user input screen is passed to the address search function unit 12 of the client. The address search function unit 12 of the client stores the user name in the address assignment function unit 2 of the server.
Send to 1.

The address assignment function unit 21 of the server
The address management table 22 is searched based on the user name (step S2). If the IP address is registered in the user name (S3 / Y), the IP address is transmitted to the address search function unit 12 of the client.

If a group name is specified in the user name (S4 / Y) and there is a free IP address in the group (S6 / Y), an IP address that is not used in the group IP address is assigned to the client. To the address search function unit 12. The client address search function unit 12 passes the received IP address to the client address assignment unit 13. To assign the client address, the received IP address is set to the address of the own terminal (S7).

(Explanation of Effect) The first effect produced by the above embodiment is that by giving an IP address from a user name, a user can use the same IP address with any client. As a result, network security can be provided for each user by the firewall. The reason is that an IP address is assigned to each user name.

The second effect is that, by managing the user name in a group, an IP address not used in the IP address assigned to the group can be assigned to the client. As a result, network security can be provided for each group by the firewall. The reason is that a user name can be managed in a group, and an unused IP address can be set as an address of the terminal itself from an IP address assigned to each group.

The above embodiment is an example of a preferred embodiment of the present invention. However, it is not limited to this.
Various modifications can be made without departing from the spirit of the present invention.

[0034]

As is apparent from the above description, in the IP address management system according to the first aspect of the present invention, the client-side device holds address assignment data, inputs a user name, and inputs the user name. The address of the server is assigned based on the data of the address assignment unit by name. Also, the apparatus on the server side has an address management table for searching by the user name received from the client side and transmitting the IP address to the client side.

Thus, by assigning an IP address for each user name from the user name, the user can use the same IP address for any client. As a result, network security can be provided for each user by the firewall. Furthermore, by managing the user name in a group, an unused IP address among the IP addresses assigned to the group can be set as the address of the own terminal and assigned to the client. As a result, network security can be provided for each group by the firewall.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of an IP address management system according to the present invention.

FIG. 2 is a flowchart illustrating an embodiment of an IP address management method according to the present invention.

[Explanation of symbols]

 1 Client-side device (computer / PC1) 2 Server-side device (PC2) 11 User name input function unit 12 Address search function unit 13 Address assignment unit 21 Address assignment function unit 22 Address management table

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) JJ27 KK31

Claims (7)

[Claims] 1. An apparatus on the client side comprising: an address assigning unit for holding address assigning data; a user name input function unit for inputting a user name; and a server based on the data of the address assigning unit based on the input user name. An address search function unit for allocating an address of the client; an apparatus on the server side for searching by a user name received from the address search function unit on the client side; and an address search for an IP address on the client side. An IP address management system comprising: an address management table transmitted to an address assignment unit via a function unit. 2. The IP address management system according to claim 1, wherein the address management table is a table in which data for managing a user name, a group name, and an IP address are registered. 3. The IP address management system according to claim 1, wherein the client-side address assigning unit sets an address received from the server-side address search function unit as an address of the terminal itself. . 4. A step (S1) of inputting a user name from the client side, a step (S2) of checking whether or not the input user name has a user name in a management table, and an IP address registered. Step (S3) of checking whether or not the group is registered; step (S4) of checking whether the group is registered; and, if the group is registered in the step (S4), the IP address of the group is empty. Step (S6) of checking whether there is any address, and if the group has no free IP address in the step (S6), the processing of the flow is terminated. A step (S7) of giving an IP address. 5. In the step (S2), if a user name does not exist in the management table, a step (S5) of unreachable connection is executed and the process is terminated.
Described IP address management method. 6. When the IP address is registered in the step (S3), the step (S3)
5. The IP address management method according to claim 4, wherein the step (7) is executed, and if the IP address is not registered in the step (S3), the step (S4) is executed. 7. The IP address management method according to claim 4, wherein if no group is registered in the step (S4), the step (S5) of not allowing connection is executed and the process is terminated.