JPH04143851A - Secret protecting device - Google Patents

Abstract

PURPOSE:To protect a secret with higher accuracy by controlling a terminal equipment that can use a computer by means of the telephone No of the terminal equipment. CONSTITUTION:A telephone No check part 6 reads the recorded terminal side telephone No data and decides whether the terminal side telephone No has the using right of a computer or not based on a fact whether the same telephone No is contained in a telephone No control file 5 or not. Then a line cutting part 7 decides no right to use the computer, that is, the terminal equipment of the partner side that received a telephone call is not identical with a terminal equipment 2 which can use the computer. Thus a call, given from another place is decided. Then the part 7 cuts the connection secured between the equipment 2 under a busy state and the computer at the side of the computer, i.e., cuts a line. Thus the equipment 2 is controlled by its telephone No and therefore the terminal equipment having an uncontrolled telephone No is unable to use the computer.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a security device for use of a computer using a public line.

[Conventional technology]

Conventionally, security devices for boat fishing have been used to check data sent from a terminal to a computer, such as a registration number recorded on an ID card or a password entered from a terminal. This also applies to the use of computers using public telephone lines, and no other means were provided.

In other words, the security protection device for using a computer using a public line is such that when using a public line, the terminal side calls the computer side, and when the call is connected, the user enters a password, etc., and checks the password. It had become.

[Problem to be solved by the invention]

The above-mentioned conventional security protection device allows a third party who has stolen the password to enter the password from another location, that is, from another terminal where the computer is not supposed to be used, and use the computer. Another drawback is that a person who calls the computer by chance enters the correct password and is then able to use the computer.

An object of the present invention is to manage the terminal device side by its telephone number and to protect the terminal device from having a telephone number that is not managed from using the computer.

[Means to solve the problem]

The security device of the present invention includes a telephone number acquisition unit that detects a telephone number on the terminal side added by a telephone office when a computer is used from a terminal device using a public line, and a telephone number acquisition unit that detects the telephone number on the terminal side added by a telephone office, It is equipped with a phone number checker that compares it with registered phone number data to check whether or not you have the authority to use the computer, and a line disconnection section that disconnects the line if you do not have the authority to use the computer.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a security protection device using a telephone number checking method according to an embodiment of the present invention.

Security protection device 1 using the telephone number check method of this embodiment
is connected to a terminal 2 having means for connecting to a computer via a public line, and has a telephone number acquisition unit 3;
A telephone number record file 4 in which terminal-side telephone number data is recorded, a telephone number management file 5 in which terminal-side telephone numbers with authority to use the computer are registered, a telephone number check section 6, and a line disconnection section. 7.

The telephone number acquisition unit 3 detects the terminal 2 side telephone number data transmitted from the telephone office and records it in the file 4. When the telephone office system connects the terminal side (calling side), computer, and computer side (receiving side), instead of sending data from the terminal, the telephone office system sends the terminal side phone number data to the computer side. Modify it to do so. The telephone number check unit 6 compares the terminal-side telephone number data recorded in the telephone number record file 4 with the telephone number data registered in the telephone number management file 5 to check whether or not there is authority to use the computer. When the telephone number checking section 6 determines that the user is not authorized to use the computer, the disconnection section 7 cuts off the line and terminates the connection between the terminal and the computer.

Next, the operation of the security device using the telephone number check system of this embodiment configured as described above will be explained.

First, a telephone call is made from the terminal 2 to the computer, and the terminal and the computer enter a conversation state. At this time, the telephone number data of the terminal 2 is transmitted from the telephone office system to the computer. The phone number acquisition unit 3 detects the phone number data on the terminal side and writes it into the phone number record file 4. From the computer's perspective, when a call is received from somewhere to use the computer, the phone number of the other party is displayed. The number will be recorded in the file. Next, control is transferred to the telephone number checking section 6.The telephone number checking section 6 reads the recorded terminal side telephone number data and checks whether the terminal side telephone number has the right to use the computer or not in the telephone number management file. If it is determined that the user is authorized to use the computer, control is transferred to the next process, such as a conventional password check. If it is determined that the user is not authorized to use the computer, the control is transferred to the line disconnection unit 7.0 The line disconnection unit 7 determines that the user is not authorized to use the computer, that is, the other party's terminal that received the call uses the computer. Since the call is coming from a different place rather than the terminal used to make the call, the computer must hang up the call between the terminal and the computer, that is, disconnect the line.

〔Effect of the invention〕

As explained above, the present invention manages terminals that can be used with a computer using the telephone number of the terminal, thereby preventing misuse of the computer from an unspecified location, accidental use of the computer, etc. The computer cannot be used from an unmanaged terminal, and this has the effect of achieving a higher level of security protection in combination with conventional security protection.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention. DESCRIPTION OF SYMBOLS 1...Security protection device, 2...Terminal device, 3...Telephone number acquisition unit, 4...Telephone number record file, 5...
Telephone number management file, 6...Telephone number check section,
7...Line disconnection section.

Claims (1)

[Claims] When using a computer using a public line from a terminal, there is a telephone number acquisition unit that detects the telephone number of the terminal connected via the public line added from the telephone office, and The telephone number checking section compares the telephone number data with registered telephone number data to check whether or not the user has the authority to use the computer, and the line disconnection section disconnects the line if the user does not have the authority to use the computer. security equipment.