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USB network outage related equipment, information safety equipment and safe network

A technology related to equipment and information security, applied in the field of electronics, can solve problems such as threats to local area network network security, data security, etc.

Inactive Publication Date: 2017-06-13
杭州厚谋创意设计有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Use anti-virus software to control the safe transmission of USB data in the LAN, but some stubborn viruses breed in the USB storage device, which seriously threatens the network security and data security of the LAN

Method used

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  • USB network outage related equipment, information safety equipment and safe network
  • USB network outage related equipment, information safety equipment and safe network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1, in figure 1 A physical disconnection device includes a network card chip U1, an analog switch U2, a network interface, a USB interface, an NPN phototransistor Q1, a pull-down resistor R1, a light emitting diode D1, and a current limiting resistor R2.

[0018] Light-emitting diode D1, current-limiting resistor R2, phototransistor Q1, and pull-down resistor R1 together form a photogate. Phototransistor Q1 is located on the left side of the USB interface, and light-emitting diode D1 is located on the right side of the USB interface. The light emitted by the light-emitting diode D1 passes through the USB interface. The interior shines on the phototransistor Q1.

[0019] The output pin of the photogate is connected to the enable pin of the analog switch U2.

[0020] When the USB device is plugged in, the light emitted by the LED D1 is blocked, the phototransistor Q1 cannot receive the light from the LED D1, and enters the cut-off state, the level of the output...

Embodiment 2

[0030] Embodiment 2, in figure 2 A physical disconnection device includes a network card chip U1, a relay U2, a network interface, a USB interface, an NPN phototransistor Q1, a pull-down resistor R1, a light emitting diode D1, and a current limiting resistor R2.

[0031] Light-emitting diode D1, current-limiting resistor R2, phototransistor Q1, and pull-down resistor R1 together form a photogate. Phototransistor Q1 is located on the left side of the USB interface, and light-emitting diode D1 is located on the right side of the USB interface. The light emitted by the light-emitting diode D1 passes through the USB interface. The interior shines on the phototransistor Q1.

[0032] The output pin of the photogate is connected to the drive pin of relay U2.

[0033] When the USB device is plugged in, the light emitted by the LED D1 is blocked, the phototransistor Q1 cannot receive the light from the LED D1, and enters the cut-off state, the level of the output pin of the photogate...

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Abstract

The USB disconnection related equipment uses a current limiting resistor, light-emitting diode, phototransistor, and pull-down resistor to form a photogate. When the USB device is inserted, it blocks the state of the optical path, and the output level of the phototransistor detection circuit changes, which can detect Plug into the device; control the connection status between the network card chip and the network port; use an analog switch or a radio frequency switch to control the data channel between the network card chip and the network port. When the USB interface is detected, the network interface is disconnected; when the USB When the interface is not unplugged, the network interface comes back connected. The information security device has the aforementioned USB disconnection associated device. Security Network, the information security system described. The application can prevent the computer virus from the USB device from attacking the computer network when the antivirus software fails.

Description

technical field [0001] The application belongs to the field of electronics, and specifically relates to USB disconnection associated equipment, information security equipment, and a security network. Background technique [0002] With the emergence and development of USB storage devices, people's security requirements for paperless office and large-capacity storage devices are increasing day by day. [0003] While USB storage devices bring us convenience, they also provide opportunities for illegal access to computer data, copying and leaking or sensitive data. Security vendors such as anti-virus software mainly protect against viruses for reading and writing data on USB storage devices, but they cannot prevent the occurrence of file theft. If there is a technology that can cut off the network when the USB storage device is inserted, it can prevent important files in the USB storage device from being stolen. [0004] Anti-virus software is used in the LAN to control the sa...

Claims

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Application Information

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IPC IPC(8): G06F21/85G06F21/56H04L12/12
CPCG06F21/85G06F21/568H04L12/12
Inventor 陆凤鸣葛小勇张杰韩松沈汇波
Owner 杭州厚谋创意设计有限公司