CN201331760Y

CN201331760Y - Double hard disks network safe isolation card

Info

Publication number: CN201331760Y
Application number: CNU2009200175528U
Authority: CN
Inventors: 杨贵永; 马丽丽; 王存勇; 张鹏伟; 卯福生; 张�林; 李明
Original assignee: Shandong Chaoyue Numerical Control Electronics Co Ltd
Current assignee: Shandong Chaoyue Numerical Control Electronics Co Ltd
Priority date: 2009-01-08
Filing date: 2009-01-08
Publication date: 2009-10-21
Anticipated expiration: 2019-01-08

Abstract

The utility model provides a double hard disks network safe isolation card, which belongs to the computer network isolator field. the isolation card is disposed on the lowest physics layer in computer, and an inner net hard disk and an outer net hard disk are mounted in the computer. A special control circuit on the isolation card is used to control the connection between the inner/outer state hard disk and the inner/outer net and corresponding systems; at any time, data can only be supplied to one state system, while the other hard disk is in inoperative state, thereby, the data safety of the inner net computer is guaranteed fundamentally. Compared with the current technologies, the utility model achieves the advantages of good generality, convenient installation, simple operation and no special maintenance needed.

Description

Two hard disk network security separate cards

Technical field

The utility model relates to a kind of computer network isolator, specifically a kind of pair of hard disk network security separate card.

Background technology

At present, in network security problem, mostly adopt encryption or firewall technology to carry out information protection, but Intranet and outer net communicate physically, this just may cause some users' forcible entry; Played the regulation of the 6th of " Regulations of Internet Security of Computer Information System " chapter 2 security system of issuing and implementation on January 1st, 2000 according to National Administration for the Protection of State Secrets: " computer information system that relates to state secret; must not be connected with Internet or other public information networks directly or indirectly must be carried out physical isolation." be not have the physical connection approach between each network, the information of each network can not leaked.

Summary of the invention

It is a kind of easy for installation that the utility model provides, and two hard disk network security separate cards simple to operate can realize effectively that Intranet and outer net are at interval.

Of the present utility model pair of hard disk network security separate card realized in the following manner, and isolation card, Intranet hard disk and outer net hard disk are installed in computing machine; Dedicated control circuit is arranged on the isolation card; Net state hard disk and outer net state hard disk and inside and outside network system was connected in isolation card was controlled by control circuit; The network interface of mainboard selects the network interface of corresponding network environment to connect, and the another one network environment can't be connected with the network interface of mainboard.

This isolation card is installed between mainboard and the hard disk.

Inside and outside net hard disk is connected with network by special purpose interface separately.

The beneficial effects of the utility model are: versatility is good, easy for installation, simple to operate, does not need the user to carry out special maintenance; Realized that the physics between Intranet and the outer net separates; Fundamentally guaranteed the safety of inner net computer data, thereby can prevent that the hacker from utilizing outer net to invade the problem of Intranet.

Control being connected of hard disk conversion and network by controller, guarantee the stability and the reliability of its duty.

Do not rely on operating system, can be applied to the PC system that all use IDE-ATA hard disk or SATA hard disk.

Description of drawings

Accompanying drawing 1 is the synoptic diagram of two hard disk network security separate cards;

Accompanying drawing 2 is schematic diagrams of two hard disk network security separate cards;

Accompanying drawing 3 is scheme process flow diagrams of two hard disk network security separate cards.

Description of drawings: 1, control circuit, 2, isolation card, 3, the Intranet hard disk, 4, the outer net hard disk.

Embodiment

Below in conjunction with accompanying drawing of the present utility model pair of hard disk network security separate card done following detailed description the in detail.

As shown in Figure 1 and Figure 2, isolation card 2, Intranet hard disk 3 and outer net hard disk 4 are installed in computing machine; Dedicated control circuit 1 is arranged on the isolation card 2; Isolation card 2 is controlled being connected of Intranet hard disk 3 and outer net hard disk 4 and inside and outside network system by control circuit 1; After selecting the corresponding network environment, the network interface of its mainboard is connected with the network interface of corresponding selected network environment isolation card, and the another one network environment can't be connected with the network interface of mainboard by controller; Guarantee that at any time data can only be led to a state hard-disk system, thereby guarantee that each network selecting only has a hard disk to be activated.

As shown in Figure 3, select Intranet, Intranet hard disk boot makes controller switch to Intranet, enters the Intranet system thus; When selecting outer net, restart computing machine, make controller switch to outer net by outer net hard disk boot, to enter the outer net system.

Two hard disk network security separate cards are installed between mainboard and the hard disk, control hard disk access fully, by network state in the upper computer software Read Controller and the pilot lamp on the isolation card, the network state that hard disk connected of notifying the user to use; By the instruction of intercepting BIOS guiding hard disk and the program of the switching command that expansion ROM sends,, realize the function that network selecting interface and notice isolation card are carried out the network of relation switching by the pci interface control computer.

Safe isolation card provides the selection interface to the user when start, the expansion ROM program that is provided by isolation card self realizes that this program run is before booting operating systems such as DOS or Windows; Isolation card is by the instruction of CH365 interface chip intercepting BIOS guiding hard disk, and by in the expansion ROM _ ROM_INT19 is after the ROM initialization, the application program of invoke user---user selects the subroutine of network environment to carry out network environment to select; The expansion ROM program can be switched according to user's selection notice isolation card.

Claims

1, two hard disk network security separate cards is characterized in that being equipped with isolation card, Intranet hard disk and outer net hard disk in computing machine; Dedicated control circuit is arranged on the isolation card; Net state hard disk and outer net state hard disk and inside and outside network system was connected in isolation card was controlled by control circuit; The network interface of mainboard selects the network interface of network environment to connect, and the another one network environment can't be connected with the network interface of mainboard.

2, according to claim 1 pair of hard disk network security separate card is characterized in that this isolation card is installed between mainboard and the hard disk.

3, according to claim 1 pair of hard disk network security separate card is characterized in that the special purpose interface that inside and outside net hard disk passes through separately is connected with network.