CN201204603Y - Conducted interference unit for Ethernet - Google Patents
Conducted interference unit for Ethernet Download PDFInfo
- Publication number
- CN201204603Y CN201204603Y CNU2008200633841U CN200820063384U CN201204603Y CN 201204603 Y CN201204603 Y CN 201204603Y CN U2008200633841 U CNU2008200633841 U CN U2008200633841U CN 200820063384 U CN200820063384 U CN 200820063384U CN 201204603 Y CN201204603 Y CN 201204603Y
- Authority
- CN
- China
- Prior art keywords
- module
- microprocessor
- local side
- programmable logic
- logic device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Small-Scale Networks (AREA)
Abstract
The utility model discloses an Ethernet conducted interference unit, including a local terminal and a client terminal, wherein one end of the local terminal is connected with a switch, the other end of the local terminal is connected with a computer; the local terminal includes a microprocessor which is connected with a programmable logic device CPLD and a detection module, the output end of the programmable logic device CPLD is connected with a scrambling module and an antennae; the client terminal includes a microprocessor which is connected with a programmable logic device CPLD and a detection module, the output end of the programmable logic device CPLD is connected with a scrambling module for descrambling a wide band signal scrambled in the local terminal and transmitting to the computer. the utility model can be used for 10M to 1000M Ethernet, and application range is wide; by means of scrambling the information in the transmission, the information will not be detected and stolen, the detection and revivification of leakage electromagnetic wave signal can be prevented, thus the safety and integrality as well as availability of the information are ensured; also the utility model can implement real-time detection to the loop.
Description
Technical field
The utility model relates to a kind of Ethernet data interference unit, relate in particular to a kind of can be applicable in 10 million-1000 mbit ethernets to data add, the Ethernet transmission disturber of descrambling.
Background technology
Along with computer technology and rapid development of network technology, network is used widely in society gradually, no matter is Party and government offices, or enterprise, scientific research public institution, to such an extent as to family and individual need to use network to carry out obtaining, exchange and handling of information.In most of the cases, the phenomenon of the shared crane span structure of inside and outside net is comparatively general, when data from the network equipment when unshielded twisted pair transmits, electromagnetism conduction emission, radiated emission and coupling all can cause ELECTROMAGNETIC RADIATION SIGNATURE to leak along netting twine from relevant device, cause to be detectd with stack to receive or steal useful data and become possibility by signal coupling between network, need on network security, strengthen taking precautions against for national security and the stable secret department of great hidden danger, particularly national security, concerning security matters unit, party, political affairs, the army's net of bringing more.
Divulge a secret for preventing that the network information installation electromagnetical from leaking to launch to cause, the current safety measure that adopts mainly is: 1, use shielding device network information equipment and isolation on every side, prevent that electromagnetic wave is to the shielding device external leakage; 2, adopt low radial network information equipment, electromagnetic radiation is reduced to the intensity of regulation, it is impossible that steal information is become; 3, with form of electromagnetic wave network information installation electromagnetical radiation leakage emission is disturbed, made the stolen party can not information extraction; 4, to the inhibition of transmission line conduct radiation, the inevitable property owing to the cable transmission radiation information adopts the optical cable transmission manner as far as possible; 5, to the protection of conduction emission, the main employing installed well behaved filter additional to power line and holding wire, reduces the cross-couplings between transfer impedance and lead.Above-mentioned five prevent that greatly the network information installation electromagnetical transmit leakage from causing the safety measure of divulging a secret except having a lot of limitation on using, and what have also needs to use special material and device, the complicated operation that has, and the equipment manufacturing cost costliness that has is difficult for applying.
In order to address the above problem, several interference units that are installed in the switch have appearred in the Chinese patent technology.But the interference unit in these several patented technologies is the video interference unit, generally can only be applied in 10-100 mbit ethernets, and limitation is bigger, is difficult for applying.
The utility model content
The purpose of this utility model is to overcome the problems referred to above that exist in existing network safety measure and the interference unit, a kind of Ethernet transmission disturber is provided, the utility model can be applied in 10 million-1000 mbit ethernets, applied widely, add descrambling in message transmission, make transmission information can not detectd receipts and steal, the electromagnetic wave signal of stopping to reveal is detectd to be received and reduction, make fail safe, integrality and the validity of information obtain guarantee, and also can detect in real time loop.
For achieving the above object, the technical solution adopted in the utility model is as follows:
A kind of Ethernet transmission disturber is characterized in that: comprise local side and client, local side one end is connected with switch, and the other end is connected with computer through client; Described local side comprises microprocessor, microprocessor is connected with programmable logic device (CPLD) and the detection line status detection module that is produced the wideband interference signal by microprocessor control, and the output of programmable logic device (CPLD) is connected with the wideband interference signal is loaded into the scrambling module in the circuit and launches the antenna that the wideband interference signal prevents extraneous detecting; Described client comprises microprocessor, microprocessor is connected with programmable logic device (CPLD) and the detection line status detection module that is produced the wideband interference signal by microprocessor control, and the output of programmable logic device (CPLD) is connected with the broadband signal descrambling reduction of local side scrambling and sends to the scrambling module of computer.
Described local side also comprises and is connected the memory module that is used for the storage client address with microprocessor.
Described local side also comprises and is connected the module that is provided with that is used to that each port working state of machine is set and the working port number is set according to the operating state that is provided with microprocessor.
Described local side also comprises and is connected the power amplifier module that is used to amplify after the wideband interference signal again through the antenna emission with programmable logic device (CPLD).
Described local side comprises that also the circuit that is used between network inlet wire and outlet is inverted and the communication interface modules of assurance network-in-dialing.
Described local side and client are respectively arranged with the alarm module that the circuit malunion is often produced alarm signal.
Adopt advantage of the present utility model to be:
One, the utility model has realized that 1000M Ethernet local side, client two-wayly add, descrambling, the generation of relevant interference signal and amplification, real-time loop detection, real-time sound and light alarm, inverted setting of circuit and recovery and computer are to the management of equipment and the generation and the inquiry of daily record.
Two, the utility model is protected the data of transmitting in the network; broken string to network produces Realtime Alerts and log file; and send the Electromagnetic Interference signal by device antenna in local side and client; mix with the electromagnetic wave signal of each network node to air leakage, the electromagnetic wave signal of stopping to reveal is detectd to be received and reduction.
Three, in the utility model, when transmitted data on network, the wideband interference signal will be superimposed upon on the data wire, at receiving terminal by circuit being detected and with the wideband interference signal filtering outside the valid data band, thereby make valid data be able to by and reduction.
Four, add mode such as descrambling in message transmission, ensuring information safety property, integrality, validity are not detectd to receive by lawless persons such as hackers and are stolen.
Five, the utility model helps enriching the safety information product of China, promotes the whole information security industry development of China, and simultaneously, because the safety information product market potential is huge, economic benefit is considerable.
Six, the utility model can be applied in 10 million-1000 mbit ethernets, and is applied widely, do not need to use special material and device, simple to operate, is easy to apply.
Description of drawings
Fig. 1 is the utility model local side theory structure schematic diagram
Fig. 2 is the utility model client theory structure schematic diagram
Embodiment
A kind of Ethernet transmission disturber comprises local side and client, and local side one end is connected with switch, and the other end is connected with computer through client; Described local side comprises microprocessor, microprocessor is connected with programmable logic device (CPLD) and the detection line status detection module that is produced the wideband interference signal by microprocessor control, and the output of programmable logic device (CPLD) is connected with the wideband interference signal is loaded into the scrambling module in the circuit and launches the antenna that the wideband interference signal prevents extraneous detecting; Described client comprises microprocessor, microprocessor is connected with programmable logic device (CPLD) and the detection line status detection module that is produced the wideband interference signal by microprocessor control, and the output of programmable logic device (CPLD) is connected with the broadband signal descrambling reduction of local side scrambling and sends to the scrambling module of computer.
In the utility model, local side also comprises and is connected the memory module that is used for the storage client address with microprocessor, is connected with microprocessor and is used to be provided with each port working state of machine and according to the operating state that is provided with module is set, is connected the power amplifier module that is used to amplify after the wideband interference signal again through the antenna emission with programmable logic device (CPLD), is used for the circuit inversion between network inlet wire and outlet and the communication interface modules of assurance network-in-dialing of working port number is set.And, be respectively arranged with the alarm module that the circuit malunion is often produced alarm signal at local side and client.
Launch explanation, in the local side, detection module is used for detection line and whether connects with detection line whether the signal transmission is arranged, scrambling module makes the information relevant interference signal scrambling that programmable logic device (CPLD) produces communication information scrambling and disturbs idle line in circuit, send to scrambling module and antenna after the interference signal that programmable logic device (CPLD) generation information is correlated with, launch through antenna again after the interference signal that power amplifier module amplification programmable logic device (CPLD) produces, memory module is used to store the address of machine, alarm module is used for that the netting twine that is connected to client does not connect or carry out sound and light alarm when breaking down when detecting, network-in-dialing is inverted and is guaranteed to the circuit that the Computer Communications Interface module is used between network inlet wire and outlet, module is set each port working state of machine mainly is set, realize according to the actual working port number that is provided with thereby be in normal operating conditions or be in test mode.
Launch explanation, in the client, detection module is used for the detection line operating state, is in communication or is in idle condition; Scrambling module produces the information coherent signal by programmable logic device (CPLD) computer is delivered in the wideband interference signal descrambling reduction of local side scrambling; Programmable logic device (CPLD) is used for the relevant wideband interference signal of generation information and delivers to scrambling module and antenna.
The course of work of the present utility model is as follows:
The local side microprocessor judges is provided with the operating state that port is set of module, if be set to normal operating conditions, then by detection module detection line state, scrambling module is added to the relevant wideband interference signal of information that programmable logic device (CPLD) produces in the circuit when detecting line idle, make the communication information do not divulged a secret, also have antenna emission wideband interference signal to prevent extraneous detecting simultaneously, when detecting the circuit malunion often, alarm module work produces sound and light alarm, if be set to test mode, then when not connecting, circuit do not report to the police.The detection module detection line state of client also reports to microprocessor, microprocessor control alarm module and programmable logic device (CPLD), programmable logic device (CPLD) produces the information coherent signal and passes to scrambling module and antenna, sends to computer behind the signal of scrambling module reduction local side scrambling.
In the utility model, on data line, utilize frequency division multiplexing FDM technology, the wideband interference signal of high-velocity scanning is loaded on the transmission line; High speed microprocessor MCU controls programmable logic device (CPLD), utilize the 128Bit pseudo random sequence code to produce, uninterrupted wideband scrambled signals generator in real time at data receiver, utilizes high performance descrambler with the scrambled signals filtering on the circuit, useful signal is able to by also reduction, do not influence the descrambler of normal data transfer, by detection to scrambled signals, judgment device and loop situation, when generation was unusual, reporting to the police also produced relative recording.The relevant interference signal that local side, client produce is after amplifying, be divided into two-way, the aerial radiation of one route sky alignment, wide frequency antenna by high-gain with the electromagnetic wave signal of 10MHz-1.5GHz to aerial transmission, high-performance is detectd receiving unit reduce each network node and disturb to the useful signal of aerial radiation, another road then is loaded on the idle frequency range of netting twine.
Claims (6)
1, a kind of Ethernet transmission disturber is characterized in that: comprise local side and client, local side one end is connected with switch, and the other end is connected with computer through client; Described local side comprises microprocessor, microprocessor is connected with programmable logic device (CPLD) and the detection line status detection module that is produced the wideband interference signal by microprocessor control, and the output of programmable logic device (CPLD) is connected with the wideband interference signal is loaded into the scrambling module in the circuit and launches the antenna that the wideband interference signal prevents extraneous detecting; Described client comprises microprocessor, microprocessor is connected with programmable logic device (CPLD) and the detection line status detection module that is produced the wideband interference signal by microprocessor control, and the output of programmable logic device (CPLD) is connected with the broadband signal descrambling reduction of local side scrambling and sends to the scrambling module of computer.
2, Ethernet transmission disturber according to claim 1 is characterized in that: described local side also comprises and is connected the memory module that is used for the storage client address with microprocessor.
3, Ethernet transmission disturber according to claim 1 is characterized in that: described local side also comprises and is connected the module that is provided with that is used to that each port working state of machine is set and the working port number is set according to the operating state that is provided with microprocessor.
4, Ethernet transmission disturber according to claim 1 is characterized in that: described local side also comprises and is connected the power amplifier module that is used to amplify after the wideband interference signal again through the antenna emission with programmable logic device (CPLD).
5, Ethernet transmission disturber according to claim 1 is characterized in that: described local side comprises that also the circuit that is used between network inlet wire and outlet is inverted and the communication interface modules of assurance network-in-dialing.
6, according to claim 1,2,3,4 or 5 described Ethernet transmission disturbers, it is characterized in that: described local side and client are respectively arranged with the alarm module that the circuit malunion is often produced alarm signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200633841U CN201204603Y (en) | 2008-05-12 | 2008-05-12 | Conducted interference unit for Ethernet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200633841U CN201204603Y (en) | 2008-05-12 | 2008-05-12 | Conducted interference unit for Ethernet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201204603Y true CN201204603Y (en) | 2009-03-04 |
Family
ID=40426916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200633841U Expired - Lifetime CN201204603Y (en) | 2008-05-12 | 2008-05-12 | Conducted interference unit for Ethernet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201204603Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102752069A (en) * | 2012-07-11 | 2012-10-24 | 北京小米科技有限责任公司 | Method and device for shielding wireless electromagnetic wave and mobile terminal |
| CN112564736A (en) * | 2020-12-02 | 2021-03-26 | 成都立鑫新技术科技有限公司 | Dynamic blocking device and method for monitoring carrier communication of scrambling code injection type power line |
-
2008
- 2008-05-12 CN CNU2008200633841U patent/CN201204603Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102752069A (en) * | 2012-07-11 | 2012-10-24 | 北京小米科技有限责任公司 | Method and device for shielding wireless electromagnetic wave and mobile terminal |
| CN112564736A (en) * | 2020-12-02 | 2021-03-26 | 成都立鑫新技术科技有限公司 | Dynamic blocking device and method for monitoring carrier communication of scrambling code injection type power line |
| CN112564736B (en) * | 2020-12-02 | 2022-10-18 | 成都立鑫新技术科技有限公司 | Dynamic blocking device and method for monitoring carrier communication of scrambling code injection type power line |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20240004139A1 (en) | Secured fiber link system | |
| US20240137133A1 (en) | Secured fiber link system | |
| CN112491534A (en) | Communication system and method | |
| CN101127680A (en) | Unidirectional physical separation network brake for USB optical fiber | |
| CN106134522B (en) | A kind of one-way data transmission method and device based on wireless laser | |
| CN114500068B (en) | Information data exchange system based on safety isolation gatekeeper | |
| CN102637332B (en) | Illegal invasion detection system and illegal invasion detection method | |
| CN201204603Y (en) | Conducted interference unit for Ethernet | |
| CN109088716A (en) | A kind of two-way chaotic communication system based on vertical surface laser | |
| CN101699456A (en) | Computer security system and method thereof | |
| CN203352596U (en) | Near-end monitoring equipment, far-end monitoring equipment and distributed base station monitoring system | |
| CN106919530A (en) | A kind of one-way transmission component based on visible ray | |
| CN206584350U (en) | A kind of one-way transmission component based on visible ray | |
| CN107968777A (en) | Network Security Monitor System | |
| CN202305625U (en) | Electricity anti-stealing system based on mobile phone short message verification | |
| US8701161B1 (en) | Systems and methods for detecting network intrusion devices | |
| CN2674772Y (en) | Network exchanger with line electromagnetic conduction protection | |
| CN101729151B (en) | Optical transmission method, device and system | |
| CN2922299Y (en) | Interference unit used for network exchanging device | |
| CN2854942Y (en) | Interference unit in network exchanger | |
| CN217428128U (en) | Information one-way transmission equipment based on laser communication | |
| CN208272980U (en) | Physical isolation transmitting device based on ultrasonic communication under a kind of reliable network environment | |
| CN203504600U (en) | Safety isolation equipment for broadcast and TV network | |
| KR20230123307A (en) | Protection relay detecting active attack using goose message and control method of the protection relay | |
| CN213461760U (en) | One-way industrial network data transmission system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090304 |
|
| CX01 | Expiry of patent term |