Audio-video information cross-network access and control method

Abstract

The invention discloses an audio-video information cross-network access and control method which comprises the following steps: audio-video state information of an outer network audio-video monitoring system is obtained by an outer network client in real time and sent to an inner network client via an RS (remote sensing) 232 interface; a control order is sent to the outer network client by the inner network client through the RS232 interface, obtained by the outer network client and sent to the outer network audio-video monitoring system; corresponding digital audio-video information selected by the inner network client is sent to an outer network decoder by the outer network audio-video monitoring system; the digital audio-video information is transformed to the simulated audio-video information by the outer network decoder, output to an inner network decoder and transformed to digital audio-video information; the selected corresponding audio-video information is obtained by the inner network client through the inner network decoder, thus the inner network access and control of the outer network audio-video information is realized. According to the method disclosed by the invention, the relative safety management regulation is completely fitted, the safety of an inner network is protected at the maximum degree and the application risk of the inner network is greatly reduced.

Description

Technical field [0001] The invention relates to a safe access and control method when an audio and video monitoring system is applied across networks. Background technique [0002] Based on relevant information security and confidentiality requirements, independent top-down private networks are deployed in units with higher security levels in China. Taking the fire department as an example, the fire protection business system is deployed in the fire protection private network, which is connected to the Internet, etc. The physical isolation of other networks is generally called intranet. According to the requirements of informatization construction planning, 3G wireless audio and video monitoring systems or military management monitoring systems that have been built or to be built are all built on the Internet, and the satellite system is another independent Compared with the intranet, the Internet and satellite networks are generally called extranets. According to the relevant c...

AI Technical Summary

Problems solved by technology

According to the relevant computer and network management regulations of the Ministry of Public Security, in order to ensure the security of intranet information, the external network system is not allowed to directly access the internal network through the network, resulting in the inability of the external network business system to be connected to the intranet system in real time. Realize the integrated application of various business systems and audio and video systems in the intranet

[0003] It is understood that at present, fire protection agencies or other units use dedicated gatekeepers or other security equipment to solve the problem of data exchange outside the internal network. The equipment must be certified by the relevant security department before it can be used. Although the above equipment can solve general business data However, there are problems such as poor real-time performance in processing large-scale information such as audio and video, and the system uses a network connection method to transmit and exchange based on IP data streams. There are hidden dangers of virus programs such as Trojan horses in the data packets, causing internal Application risk of network system network

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