The firewall ensures the protection of a network by falling on some number of defined rules set by the administrator of the computer network. Managing these rules to be optimum without errors is very difficult and sometimes leads to the formation of anomalies such as redundant, correlation, and shadowing rules. This defined problem has received the attention of both the academic and industry players in finding a pragmatic solution. A lot of reasonable attempts has been made by researchers of which many resorted to the automation of the firewall rule management process. The automation is to aid determine and resolve the conflicting rules and also to reduce the load that will be on the network administrator, which almost always leads to the creation of contradictory rules. The existing literature has not focused much on the amount of time it takes to determine and resolve these anomalies. Most of the conflicting rules are as a result of the wrongful position[index] a rule may occupy in the rule list. The research proposes a contextual design of an improved firewall framework, that rest on the heuristic approach of the Particle Swarm Optimization (PSO) Algorithm to determine and assign the best position [index] to a rule and thereby improving the search and resolution of identified anomalies in a firewall rules list. Three (3) lightweight algorithms are designed for anomaly detection and resolution using PSO as the backbone.
The structural abstraction of Recommender Systems has a high resemblance as that of a Complex Network(CN). The underlining principles of the different types of Recommender Systems, such as Collaborative Filtering, Content-Based, Knowledge-Based, Utility-Based, and Hybrid are similar to the attributes and theories of Complex Networks. Considering the enormity of computation in Recommender Systems logic formulation and it's a structural similarity with Complex Networks, the research work seeks to highlight attributes of Complex Networks and Recommender Systems to suggest the applicability of theories, and principles in CN's that can be considered in the construction of Recommender Systems. The research further elaborates on matrices for checking the correctness of the use of these theories.
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