【摘要】：網(wǎng)絡(luò)入侵中的可用節(jié)點(diǎn)進(jìn)行準(zhǔn)確識(shí)別,可以在發(fā)生網(wǎng)絡(luò)入侵時(shí),尋找可用節(jié)點(diǎn)保證網(wǎng)絡(luò)正常運(yùn)作。在可用節(jié)點(diǎn)識(shí)別過程中,應(yīng)對網(wǎng)絡(luò)節(jié)點(diǎn)安全性進(jìn)行準(zhǔn)確判斷,精確的計(jì)算出節(jié)點(diǎn)可用性,但是傳統(tǒng)方法依據(jù)拓?fù)鋭堇碚?構(gòu)建網(wǎng)絡(luò)入侵中的可用節(jié)點(diǎn)識(shí)別模型,但不能對網(wǎng)絡(luò)節(jié)點(diǎn)可用性進(jìn)行準(zhǔn)確計(jì)算,導(dǎo)致識(shí)別出的節(jié)點(diǎn)中仍還有大量的無效節(jié)點(diǎn),降低了節(jié)點(diǎn)識(shí)別的準(zhǔn)確性。提出一種基于互信息的網(wǎng)絡(luò)入侵中的可用節(jié)點(diǎn)優(yōu)化識(shí)別模型。上述模型先將入侵網(wǎng)絡(luò)的每條邊都定義為一個(gè)信息流,獲取每條邊上相同節(jié)點(diǎn)的概率分布,對網(wǎng)絡(luò)初始條邊上節(jié)點(diǎn)的機(jī)密性、完整性和可用性進(jìn)行無量綱化處理,比較網(wǎng)絡(luò)機(jī)密性、完整性和可用性在網(wǎng)絡(luò)入侵狀態(tài)下的權(quán)重,組建網(wǎng)絡(luò)節(jié)點(diǎn)安全性的判定矩陣,計(jì)算出網(wǎng)絡(luò)入侵中的節(jié)點(diǎn)可用性重要度識(shí)別指標(biāo),利用計(jì)算的結(jié)果組建網(wǎng)絡(luò)入侵中的可用節(jié)點(diǎn)識(shí)別模型。仿真實(shí)驗(yàn)證明,所提模型可以全面有效地完成對網(wǎng)絡(luò)入侵中的可用節(jié)點(diǎn)識(shí)別,提高網(wǎng)絡(luò)的連通性。
[Abstract]:The available nodes in the network intrusion can be identified accurately, and the available nodes can be found to ensure the normal operation of the network in the event of network intrusion. In the process of available node identification, the security of network nodes should be judged accurately and the availability of nodes should be calculated accurately. However, according to the topological potential theory, the available node identification model in network intrusion is constructed. However, the availability of network nodes can not be calculated accurately, resulting in a large number of invalid nodes in the identified nodes, which reduces the accuracy of node identification. In this paper, an optimal identification model of available nodes in network intrusion based on mutual information is proposed. In the above model, each edge of the intrusion network is defined as an information flow, the probability distribution of the same node on each side is obtained, and the confidentiality, integrity and availability of the nodes on the initial edge of the network are dimensionless. The weights of network confidentiality, integrity and availability in the state of network intrusion are compared, the decision matrix of network node security is established, and the identification index of node availability importance in network intrusion is calculated. The available node identification model in network intrusion is constructed by using the calculated results. The simulation results show that the proposed model can fully and effectively identify the available nodes in network intrusion and improve the connectivity of the network.
【作者單位】： 南開大學(xué)濱海學(xué)院;
【分類號(hào)】：TP393.08

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