基于物理隔離技術(shù)的網(wǎng)閘系統(tǒng)的設(shè)計與實現(xiàn)
本文選題:物理隔離 + 網(wǎng)閘; 參考:《西安電子科技大學(xué)》2014年碩士論文
【摘要】:近些年,互聯(lián)網(wǎng)的發(fā)展突飛猛進(jìn),使用互聯(lián)網(wǎng)的領(lǐng)域也越來越多,互聯(lián)網(wǎng)的靈活性、開放性以及可遠(yuǎn)程通信的特點也受到越來越多用戶的支持,互聯(lián)網(wǎng)已經(jīng)成為人們學(xué)習(xí)、生活、工作中必不可少的工具。但也正是由于這些特性,互聯(lián)網(wǎng)的安全防護變得非常的困難,安全隱患日益加深,各種因為網(wǎng)絡(luò)安全而造成的重大損失頻繁發(fā)生,因此網(wǎng)絡(luò)的安全是非常重要的,而對于一些比如政府、軍隊、銀行等特殊單位,網(wǎng)絡(luò)的安全更成為了重中之重。如何保證這些特殊單位內(nèi)部網(wǎng)絡(luò)信息的安全,而且還要在此前提下盡可能的和外部網(wǎng)絡(luò)進(jìn)行適當(dāng)?shù)臄?shù)據(jù)交換來滿足某些業(yè)務(wù)方面的需要,物理隔離網(wǎng)閘系統(tǒng)的設(shè)計與實現(xiàn),就具有了重要的意義。 本文實現(xiàn)了在了解物理隔離技術(shù)的原理和基本知識的同時,還對現(xiàn)有物理隔離網(wǎng)閘及網(wǎng)閘使用環(huán)境和需求進(jìn)行了分析,根據(jù)使用需求和實際情況,提出了基于物理隔離技術(shù)的網(wǎng)閘系統(tǒng)的框架以及設(shè)計方案,主要工作如下: (1)結(jié)合物理隔離技術(shù)的原理和基本知識,設(shè)計出能夠具有數(shù)據(jù)擺渡功能的硬件板卡的具體結(jié)構(gòu),結(jié)合數(shù)據(jù)信號的控制傳遞數(shù)據(jù)以達(dá)到物理隔離的效果,并根據(jù)具體使用的部件芯片編寫硬件板卡的驅(qū)動程序,驅(qū)動控制硬件板卡正常工作。 (2)在軟件上完成網(wǎng)閘系統(tǒng)在網(wǎng)絡(luò)協(xié)議上的物理隔離,通過強行捕獲送往內(nèi)部網(wǎng)絡(luò)的數(shù)據(jù)包,并對這些數(shù)據(jù)包進(jìn)行處理,利用剝離和重組TCP/IP協(xié)議的方法,完全消除TCP/IP協(xié)議在傳輸過程起到的作用,,使得最終在硬件部分傳輸?shù)臄?shù)據(jù)為不帶有任何協(xié)議因素的原始數(shù)據(jù),排除TCP/IP協(xié)議存在的漏洞所帶來的安全威脅,消除現(xiàn)存的大部分常見攻擊,更好的保障網(wǎng)絡(luò)安全。 (3)對整個系統(tǒng)進(jìn)行一系列的測試,利用網(wǎng)絡(luò)壓力測試對數(shù)據(jù)傳輸?shù)陌踩赃M(jìn)行測試,來保證數(shù)據(jù)傳輸可以抵抗常見攻擊;利用長時間不間斷傳輸數(shù)據(jù)來測試系統(tǒng)的穩(wěn)定性,以保證數(shù)據(jù)可以準(zhǔn)確無誤的進(jìn)行交換,實現(xiàn)物理隔離設(shè)備的最終目的。
[Abstract]:In recent years , the development of the Internet has soared , and the Internet has become more and more popular in the field of Internet . The Internet has become a necessary tool for people to study , live and work . But it is also because of these characteristics , the security of the Internet becomes very difficult , and the security of the network is becoming more and more important .
Based on the principle and basic knowledge of physical isolation technology , this paper analyzes the use environment and demand of the existing physical isolation network gate and gateway , and puts forward the framework and design scheme of the gateway system based on the physical isolation technology according to the use demand and the actual situation . The main work is as follows :
( 1 ) combining the principle and the basic knowledge of the physical isolation technology , designing the specific structure of the hardware board card capable of having the data ferry function , transmitting the data in combination with the control of the data signal to achieve the effect of physical isolation , and writing the driver of the hardware board card according to the specific used part chip , and driving the control hardware board to work normally .
and ( 2 ) the physical isolation of the gateway system on the network protocol is completed on the software , and the data packets sent to the internal network are forcibly captured , the data packets are processed , the TCP / IP protocol is completely eliminated by the method of stripping and recombining TCP / IP protocols , so that the data finally transmitted in the hardware part is the original data without any protocol factor , the security threat caused by the vulnerability in the TCP / IP protocol is eliminated , the existing most common attacks are eliminated , and the network security is better guaranteed .
( 3 ) a series of tests are carried out on the whole system , and the security of the data transmission is tested by using the network pressure test to ensure the data transmission can resist the common attack ;
the stability of the system is tested by using the long - time uninterrupted transmission data so as to ensure that the data can be exchanged correctly and the final purpose of the physical isolation device is realized .
【學(xué)位授予單位】:西安電子科技大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2014
【分類號】:TP393.08
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