電信與移動(dòng)互聯(lián)網(wǎng)行業(yè)市場(chǎng)企業(yè)產(chǎn)品應(yīng)用及無線網(wǎng)民的特點(diǎn)、行業(yè)發(fā)展(編輯修改稿)
2025-07-15 15:03 本頁面
【文章內(nèi)容簡(jiǎn)介】 ors generated in the production phase usually have a huge impact on the reliability and robustness of the generated code and final system. In this paper, we propose the application of the ideas of ModelBased Development to firewall access control list modelling and automatic rule set generation. First, an analysis of the most widely used firewall languages in the industry is conducted. Next, a PlatformIndependent Model for firewall ACLs is proposed. This model is the result of exhaustive analysis and of a discussion of different alternatives for models in a bottomup methodology. Then, it is proposed that a verification stage be added in the early stages of the ModelBased Development methodology, and a polynomial time plexity process and algorithms are proposed to detect and diagnose inconsistencies in the PlatformIndependent Model. Finally, a theoretical plexity analysis and empirical tests with real models were conducted, in order to prove the feasibility of our proposal in real environments.Article Outline1. Introduction2. Firewall open problems: Related works . Rule set design. Consistency and redundancy diagnosis. Rule set conformity3. ModelBased Development for firewalls . Verification and Validation of Models in MBD4. A PIM for firewalls . PIM construction alternatives . Factorization of selectors. Aggregation of selectors. Customization of selectors. PlatformIndependent Model, PIM . Addition of nonmon selectors. Adding more syntaxes to selectors. PIM specification for firewall ACLs. Example5. PIM verification: consistencybased diagnosis process . Step 1. Detection of inconsistent pairs of rules. Step 2. Identification of the set of conflicting rules. Experimental results6. Conclusions and future worksAcknowledgementsAnnex I. Comparative analysis of firewall filtering selectors. Source and Destination addresses (Table ). Interface (Table ). Interface direction (Table ). Protocol (Table ). Source and Destination ports (Table ). TCP flags (Table ). TCP options (Table ). ICMP type (Table ). IP options (Table ). IP version (Table ). Source and Destination MAC addresses (Table and Table ). Type of Service (ToS) (Table ). Time to Live (TTL) (Table ). Actions (Table )Annex II. Firewall PIM represented as XML SchemaReferences了解統(tǒng)計(jì)調(diào)查知識(shí)，熟悉調(diào)查問卷設(shè)計(jì)，對(duì)調(diào)查數(shù)據(jù)敏感，有較強(qiáng)的數(shù)據(jù)分析能力和報(bào)告撰寫能力； 有較強(qiáng)的項(xiàng)目管理能力，熟悉研究咨詢的工作方式； 善于溝通，有較好的社會(huì)交往與組織能力； 工作細(xì)心，有高度的責(zé)任心和強(qiáng)烈的團(tuán)隊(duì)意識(shí)； 能熟練查閱、翻譯和書寫英文信息，有較好的英語口語能力； 經(jīng)驗(yàn)豐富與能力較強(qiáng)者，可適當(dāng)放寬要求； 在互聯(lián)網(wǎng)市場(chǎng)研究或咨詢公司中擔(dān)任中高級(jí)職位者優(yōu)先。統(tǒng)計(jì)學(xué)、社會(huì)學(xué)、經(jīng)濟(jì)學(xué)、通信、計(jì)算機(jī)等相關(guān)專業(yè)碩士及以上學(xué)歷； 三年以上工作經(jīng)驗(yàn)； 對(duì)電信與移動(dòng)互聯(lián)網(wǎng)行業(yè)有較深入的理解，并熟悉傳統(tǒng)互聯(lián)網(wǎng)市場(chǎng)。對(duì)移動(dòng)互聯(lián)網(wǎng)企業(yè)、產(chǎn)品應(yīng)用及無線網(wǎng)民的特點(diǎn)、行業(yè)發(fā)展趨勢(shì)，有獨(dú)特、深入的認(rèn)識(shí)；緊跟移動(dòng)互聯(lián)網(wǎng)發(fā)展態(tài)勢(shì)，面向政府、社團(tuán)、企業(yè)，針對(duì)移動(dòng)互聯(lián)網(wǎng)細(xì)分領(lǐng)域，策劃與實(shí)施互聯(lián)網(wǎng)研究項(xiàng)目，撰寫高質(zhì)量的調(diào)查研究報(bào)告。An intelligent backbone formation algorithm for wireless ad hoc networks based on distributed learning automataOriginal Research ArticleComputer NetworksIn wireless ad hoc networks, due to the dynamic topology changes, multi hop munications and strict resource limitations, routing bees the most challenging issue, and broadcasting is a mon approach which is used to alleviate the routing problem. Global flooding is a straightforward broadcasting method which is used in almost all existing topologybased routing protocols and suffers from the notorious broadcast storm problem. The connected dominating set (CDS) formation is a promising approach for reducing the broadcast routing overhead in which the messages are forwarded along the virtual backbone induced by the CDS. In this paper, we propose an intelligent backbone formation algorithm based on distributed learning automata (DLA) in which a near optimal solution to the minimum CDS problem is found. Sending along this virtual backbone alleviates the broadcast storm problem as the number of hosts responsible for broadcast routing is reduced to the number of hosts in backbone. The proposed algorithm can be also used in multicast routing protocols, where the only multicast group members need to be dominated by the CDS. In this paper, the worst case running time and message plexity of the proposed backbone formation algorithm to find a 1/(1ε) optimal size backbone are puted. It is shown that by a proper choice of the learning rate of the proposed algorithm, a tradeoff between the running time and message plexity of algorithm with the backbone size can be made. The simulation results show that the proposed algorithm significantly outperforms the existing CDSbased backbone formation algorithms in terms of the network backbone size, and its message overhead is only slightly more than the least cost algorithm.Article Outline1. Introduction2. Related work3. Learning automata, distributed learning automata, and variable actionset learning automata . Learning automata. Distributed learning automata. Variable actionset learning automata4. DLAbased virtual b
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