Physical isolation type USB port protection system and method

Abstract

The invention discloses a physical isolation type USB port protection system and method. The protection system comprises a central processor, an upper computer connected with multiple user computers, an external memory used for storing user names and passwords and multiple relays used for controlling on-off of multiple USB ports in the user computers according to switching signals of the central processor. The upper computer is connected with the central processor through serial communication, and the control ends of the relays and the output end of the external memory are electrically connected with corresponding ports of the central processor. The protection method includes the steps that according to the user names, the central processor divides users into three levels, namely, common users, senior users and secret commissioners; the users input the user names and the passwords into the user computers, and the central processor controls login of the users according to the user names and the passwords; the central processor determines the levels of the users according to the user names and determines USB port use permission of the users. The protection method guarantees controllability of data in a computer.

Description

technical field [0001] The invention belongs to the technical field of USB interface protection, in particular to a physically isolated USB interface protection system and a protection method thereof. Background technique [0002] For some secret-related units, the internal data of the computer is very important. Once leaked or damaged, the loss is irreparable. Therefore, how to ensure the security of important files in the computer has become a problem that managers must face. The USB interface is one of the most commonly used communication ports on the computer. The files in the computer can be easily copied through the storage devices such as U disk and mobile hard disk, and the virus and Trojan horse can be easily uploaded to the computer to destroy the files; it can be seen that the USB interface has been become a major threat to data security. [0003] At present, the solutions for USB interface protection at home and abroad can be mainly divided into the following ca...

AI Technical Summary

Problems solved by technology

The USB interface is one of the most commonly used communication ports on the computer. The files in the computer can be easily copied through the storage devices such as U disk and mobile hard disk, and the virus and Trojan horse can be easily uploaded to the computer to destroy the files; it can be seen that the USB interface has been become a major threat to data security

[0003] At present, the solutions for USB interface protection at home and abroad can be mainly divided into the following categories: 1) BIOS setting method (cutting the mess quickly), this method is too overbearing and inconvenient to use; 2) Prohibition of flash disk or mobile hard disk Start, hide the drive letter and prohibit viewing, this method is only effective for some USB storage devices, and this method is more complicated, and it is not convenient for users to use; 3) It is forbidden to install USB drivers, because this method will cause all USB devices use, has gradually been eliminated by users; 4) using a single transmitter, the equipment is expensive and the user's usability is poor

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