CN111556062A - Network security isolation device with one-way import function and method - Google Patents
Network security isolation device with one-way import function and method Download PDFInfo
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- CN111556062A CN111556062A CN202010372155.3A CN202010372155A CN111556062A CN 111556062 A CN111556062 A CN 111556062A CN 202010372155 A CN202010372155 A CN 202010372155A CN 111556062 A CN111556062 A CN 111556062A
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- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/02—Network architectures or network communication protocols for network security for separating internal from external traffic, e.g. firewalls
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/20—Network architectures or network communication protocols for network security for managing network security; network security policies in general
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- H—ELECTRICITY
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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Abstract
The invention discloses a network security isolation device with a one-way import function, which comprises an intranet processing unit A: assembling the data in the received intranet network messages into internal messages, and transmitting the internal messages to a one-way isolation unit A; unidirectional isolation unit A: checking the internal message, and transmitting the qualified internal message to an external network processing unit; an outer net processing unit: assembling the data in the qualified internal messages into network messages, and transmitting the network messages to an external network; assembling the received data in the external network message into an internal message, and transmitting the internal message to a one-way isolation unit B; the unidirectional isolation unit B: checking the internal message, and transmitting the qualified internal message to an intranet processing unit B; an intranet processing unit B: and assembling the data in the qualified internal messages into network messages, and transmitting the network messages to the intranet. A corresponding method is disclosed. The invention realizes bidirectional interaction while ensuring high-strength safety protection.
Description
Technical Field
The invention relates to a network security isolation device with a one-way import function and a method thereof, belonging to the field of network isolation.
Background
The vigorous development of the internet brings frequent large-scale information interaction requirements between a private network and a public network, and the private network is required to have the characteristics of wide interconnection and open interaction, and meanwhile, the malicious attack of increasingly advanced, organized and sustained network boundaries can be effectively targeted. In the face of increasingly severe network security situation, network security isolation equipment is usually deployed between the private network and the public network, and the private network is subjected to logic strong isolation protection, so that the security of the private network is effectively guaranteed.
The existing network security isolation devices have two types: one is to use protocol isolation technology, which can realize bidirectional interaction of data, but has insufficient protection capability to high-security areas; the other is a network one-way import product, a channel for one-way information transmission is constructed in a physical mode, one-way information import is realized, the protection capability of a high-security area is strong, but two-way interaction of data cannot be realized.
Due to the particularity of the network isolation application scenario, high-strength security protection is generally required for a high security area, and meanwhile, bidirectional interaction of data is also required to be achieved. It is therefore desirable to design a device that meets both of these requirements.
Disclosure of Invention
The invention provides a network security isolation device with a one-way import function and a method thereof, which solve the problems disclosed in the background technology.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a network security isolation device with a one-way import function comprises an intranet processing unit A, a one-way isolation unit A, an extranet processing unit, an intranet processing unit B and a one-way isolation unit B;
intranet processing unit a: assembling the data in the received intranet network messages into internal messages, and transmitting the internal messages to a one-way isolation unit A;
unidirectional isolation unit A: checking the internal message, and transmitting the qualified internal message to an external network processing unit;
an outer net processing unit: assembling the data in the qualified internal messages into network messages, and transmitting the network messages to an external network;
assembling the received data in the external network message into an internal message, and transmitting the internal message to a one-way isolation unit B;
the unidirectional isolation unit B: checking the internal message, and transmitting the qualified internal message to an intranet processing unit B;
an intranet processing unit B: and assembling the data in the qualified internal messages into network messages, and transmitting the network messages to the intranet.
The external network processing unit comprises an interaction unit A, an interaction unit B, an interaction unit C and an external network control unit;
an interaction unit A: receiving a qualified internal message sent by the unidirectional isolation unit A and sending the qualified internal message to the external network control unit;
an interaction unit B: receiving an internal message sent by an external network control unit, and sending the internal message to a one-way isolation unit B;
an interaction unit C: receiving a network message sent by an external network and sending the network message to an external network control unit; receiving a network message sent by an external network control unit and sending the network message to an external network;
an external network control unit: assembling the data in the qualified internal messages into network messages, and transmitting the network messages to an interaction unit C; and assembling the data in the extranet network message into an internal message, and transmitting the internal message to the interaction unit B.
An external network control unit: assembling the data in the qualified internal messages into network messages, and transmitting the network messages to an interaction unit C according to a preset control strategy; and assembling the received data in the extranet network message into an internal message, and transmitting the internal message to the interaction unit B according to a preset control strategy.
And stripping data in the network message from the network protocol, and assembling the data into an internal message according to the format of a preset private protocol.
And stripping the data in the internal message from the preset private protocol, and assembling the data into the network message according to the format of the network protocol.
A method for a network security isolation device with a unidirectional import function comprises the following steps,
the internal network transmits data to the external network:
the intranet processing unit A assembles the data in the received intranet network messages into internal messages and transmits the internal messages to the one-way isolation unit A
The unidirectional isolation unit A checks the internal message and transmits the qualified internal message to the external network processing unit;
the outer network processing unit assembles the data in the qualified inner message into a network message and transmits the network message to the outer network;
the outer net transmits data to the inner net:
the external network processing unit assembles the data in the received external network messages into internal messages and transmits the internal messages to the one-way isolation unit B;
the unidirectional isolation unit B checks the internal message and transmits the qualified internal message to the intranet processing unit B;
and the intranet processing unit B assembles the data in the qualified internal messages into network messages and transmits the network messages to the intranet.
The external network processing unit comprises an interaction unit A, an interaction unit B, an interaction unit C and an external network control unit;
the qualified internal message is transmitted to an external network control unit through an interaction unit A; the external network control unit assembles the data in the qualified internal messages into network messages and transmits the network messages to the external network through the interaction unit C;
the external network message is transmitted to the external network control unit through the interaction unit C; the external network control unit assembles data in the network messages into internal messages, and transmits the internal messages to the one-way isolation unit B through the interaction unit B.
The external network control unit assembles the data in the qualified internal messages into network messages, and transmits the network messages to the external network through the interaction unit C according to a preset control strategy;
and the external network control unit assembles data in the network messages into internal messages, and transmits the internal messages to the one-way isolation unit B through the interaction unit B according to a preset control strategy.
And stripping data in the network message from the network protocol, and assembling the data into an internal message according to the format of a preset private protocol.
And stripping the data in the internal message from the preset private protocol, and assembling the data into the network message according to the format of the network protocol.
The invention achieves the following beneficial effects: the invention is provided with two-way data channels, and each channel is provided with a one-way isolation unit, thereby realizing two-way interaction of data while ensuring high-strength safety protection.
Drawings
FIG. 1 is a block diagram of the apparatus of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1, a network security isolation device with a unidirectional import function includes an intranet processing unit a, a unidirectional isolation unit a, an extranet processing unit, an intranet processing unit B, and a unidirectional isolation unit B; the extranet processing unit comprises an interaction unit A, an interaction unit B, an interaction unit C and an extranet control unit.
The intranet is connected to intranet processing unit A's input and is sent the unit, one-way isolation unit A's input is connected to intranet processing unit A's output, one-way isolation unit A's input is connected to one-way isolation unit A's output, the outer net control unit is connected to interaction unit A's output, outer net control unit and interaction unit C intercommunicate, interaction unit C and outer net receiving and dispatching unit intercommunicate, the outer net control unit is connected to interaction unit B's input, one-way isolation unit B's input is connected to interaction unit B's output, intranet processing unit B's input is connected to one-way isolation unit B's output, intranet receiving unit is connected to intranet processing unit B's output.
Wherein the content of the first and second substances,
intranet processing unit a: receiving a network message of an intranet, stripping data in the intranet network message from a network protocol, assembling the data into an internal message according to a format of a preset private protocol, and transmitting the internal message to a one-way isolation unit A.
Unidirectional isolation unit A: the internal message is checked (proprietary protocol format check) and the internal message qualified by the check is transmitted to the interaction unit a. The unidirectional isolation unit a only allows data to be sent from the intranet to the extranet.
An interaction unit A: and receiving the qualified internal message sent by the unidirectional isolation unit A and sending the qualified internal message to the external network control unit.
An external network control unit: stripping data in the qualified internal message from a preset private protocol, assembling the data into a network message according to the format of the network protocol, and transmitting the network message to an interaction unit C according to a preset control strategy; and stripping data in the extranet network message from the network protocol, assembling the data into an internal message according to the format of a preset private protocol, and transmitting the internal message to the interaction unit B according to a preset control strategy.
An interaction unit C: receiving a network message sent by an external network and sending the network message to an external network control unit; and receiving the network message sent by the external network control unit and sending the network message to the external network.
An interaction unit B: and receiving the internal message sent by the external network control unit and sending the internal message to the one-way isolation unit B.
The unidirectional isolation unit B: and checking the internal message, and transmitting the qualified internal message to the intranet processing unit B. The unidirectional isolation unit B only allows data to be sent from the external network to the internal network.
An intranet processing unit B: and stripping the data in the qualified internal message from a preset private protocol, assembling the data into a network message according to the format of the network protocol, and transmitting the network message to the intranet.
A method for a network security isolation device with a unidirectional import function comprises the following steps,
the internal network transmits data to the external network:
A1) the intranet processing unit A receives the network message of the intranet, strips data in the intranet network message from a network protocol, assembles the data into an internal message according to a format of a preset private protocol, and transmits the internal message to the one-way isolation unit A;
A2) the one-way isolation unit A checks the internal message (checking the proprietary protocol format), and transmits the qualified internal message to the interaction unit A;
A3) the interaction unit A receives the qualified internal message sent by the one-way isolation unit A and sends the qualified internal message to the external network control unit;
A4) the extranet control unit strips the data in the qualified internal message from a preset private protocol, assembles the data into a network message according to the format of the network protocol, and transmits the network message to the interaction unit C according to a preset control strategy;
A5) and the interaction unit C receives the network message sent by the external network control unit and sends the network message to the external network.
The outer net transmits data to the inner net:
B1) the interaction unit C receives the network message sent by the external network and sends the network message to the external network control unit;
B2) the external network control unit strips data in the external network message from the network protocol, assembles the data into an internal message according to the format of a preset private protocol, and transmits the internal message to the interaction unit B according to a preset control strategy;
B3) the interaction unit B receives the internal message sent by the external network control unit and sends the internal message to the one-way isolation unit B;
B4) the unidirectional isolation unit B checks the internal message and transmits the qualified internal message to the intranet processing unit B;
B5) the intranet processing unit B strips the data in the qualified internal message from the preset private protocol, assembles the data into a network message according to the format of the network protocol, and transmits the network message to the intranet.
The invention is provided with two-way data channels, and each channel is provided with a one-way isolation unit, thereby realizing two-way interaction of data while ensuring high-strength safety protection.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (10)
1. A network security isolation device with a one-way import function is characterized in that: the system comprises an internal network processing unit A, a unidirectional isolation unit A, an external network processing unit, an internal network processing unit B and a unidirectional isolation unit B;
intranet processing unit a: assembling the data in the received intranet network messages into internal messages, and transmitting the internal messages to a one-way isolation unit A;
unidirectional isolation unit A: checking the internal message, and transmitting the qualified internal message to an external network processing unit;
an outer net processing unit: assembling the data in the qualified internal messages into network messages, and transmitting the network messages to an external network;
assembling the received data in the external network message into an internal message, and transmitting the internal message to a one-way isolation unit B;
the unidirectional isolation unit B: checking the internal message, and transmitting the qualified internal message to an intranet processing unit B;
an intranet processing unit B: and assembling the data in the qualified internal messages into network messages, and transmitting the network messages to the intranet.
2. The network security isolation device with a unidirectional import function according to claim 1, wherein: the external network processing unit comprises an interaction unit A, an interaction unit B, an interaction unit C and an external network control unit;
an interaction unit A: receiving a qualified internal message sent by the unidirectional isolation unit A and sending the qualified internal message to the external network control unit;
an interaction unit B: receiving an internal message sent by an external network control unit, and sending the internal message to a one-way isolation unit B;
an interaction unit C: receiving a network message sent by an external network and sending the network message to an external network control unit; receiving a network message sent by an external network control unit and sending the network message to an external network;
an external network control unit: assembling the data in the qualified internal messages into network messages, and transmitting the network messages to an interaction unit C; and assembling the data in the extranet network message into an internal message, and transmitting the internal message to the interaction unit B.
3. The network security isolation device with a unidirectional import function according to claim 2, wherein: an external network control unit: assembling the data in the qualified internal messages into network messages, and transmitting the network messages to an interaction unit C according to a preset control strategy; and assembling the received data in the extranet network message into an internal message, and transmitting the internal message to the interaction unit B according to a preset control strategy.
4. The network security isolation device with unidirectional import function according to claim 1 or 2, wherein: and stripping data in the network message from the network protocol, and assembling the data into an internal message according to the format of a preset private protocol.
5. The network security isolation device with unidirectional import function according to claim 1 or 2, wherein: and stripping the data in the internal message from the preset private protocol, and assembling the data into the network message according to the format of the network protocol.
6. The method of claim 1, wherein the method comprises the following steps: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the internal network transmits data to the external network:
the intranet processing unit A assembles the data in the received intranet network messages into internal messages and transmits the internal messages to the one-way isolation unit A
The unidirectional isolation unit A checks the internal message and transmits the qualified internal message to the external network processing unit;
the outer network processing unit assembles the data in the qualified inner message into a network message and transmits the network message to the outer network;
the outer net transmits data to the inner net:
the external network processing unit assembles the data in the received external network messages into internal messages and transmits the internal messages to the one-way isolation unit B;
the unidirectional isolation unit B checks the internal message and transmits the qualified internal message to the intranet processing unit B;
and the intranet processing unit B assembles the data in the qualified internal messages into network messages and transmits the network messages to the intranet.
7. The method of claim 6, wherein the method comprises the following steps: the external network processing unit comprises an interaction unit A, an interaction unit B, an interaction unit C and an external network control unit;
the qualified internal message is transmitted to an external network control unit through an interaction unit A; the external network control unit assembles the data in the qualified internal messages into network messages and transmits the network messages to the external network through the interaction unit C;
the external network message is transmitted to the external network control unit through the interaction unit C; the external network control unit assembles data in the network messages into internal messages, and transmits the internal messages to the one-way isolation unit B through the interaction unit B.
8. The method of claim 7, wherein the method comprises the steps of: the external network control unit assembles the data in the qualified internal messages into network messages, and transmits the network messages to the external network through the interaction unit C according to a preset control strategy;
and the external network control unit assembles data in the network messages into internal messages, and transmits the internal messages to the one-way isolation unit B through the interaction unit B according to a preset control strategy.
9. The method of claim 6 or 7, wherein the method comprises the following steps: and stripping data in the network message from the network protocol, and assembling the data into an internal message according to the format of a preset private protocol.
10. The method of claim 6 or 7, wherein the method comprises the following steps: and stripping the data in the internal message from the preset private protocol, and assembling the data into the network message according to the format of the network protocol.
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