Research On Double Nets Physical Isolation Method Of Network Terminal Equipment

With the rapid development of information technology, computer network received extensive development and application, which has brought people office convenient, also to confidential management put forward new challenges. In e-government network, one end connected to a secret network within the government, the other end is connected to the external network which associated with insecurity factors, as many of which involve confidential information, so its information security must be effectively guaranteed. With national vigorously promote e-government development process, on the one hand,the e-government involves different levels of classified information, they need for security isolation; on the other hand, part of internal network information in e-government and external networks needs real-time exchange. The contradictions which from their demand lead us to find some new solutions,and the solutions must be enable that,with the case of internal network and external networks ensure safe isolation in the e-government, the information security exchange.This paper detailed analysis of a variety of network isolation technology at home and abroad, concluded its advantages and disadvantages which in the realization of network isolation and information security exchange.On the basis of it's advantages and disadvantages, and with the current needs of network isolation, the paper research how to better realize physical isolation and method of data exchange in the e-government, and designed a dual-network physical isolation system which can effectively prevent disclosure of network information, network information security to achieve internal and external interaction. This paper mainly studies the following several aspects of content:(1) Analysis of the current problem and characteristics of network security in the e-government, and puts forward some effective solutions method to the safety problems.(2) Analysis of the current multiple network isolation technology which used in domestic and international, summarizes their advantages and disadvantages, using simulation switching technology and puts forward a set of double nets physical isolation scheme, which can effectively reduce office cost, and save space, reduce energy consumption.(3) Analysis of the current safety problem of the data exchange in e-government, and put forward a new data exchange scheme which use usb2.0 technology and based on data ferry principle.(4) According to above design scheme, the paper gives the hardware design and implementation of the physical isolation system.