Security Evaluation Methods of Computer Networks Based on BP Neural Network

An index system of security evaluation of computer network system is constructed based on the tree-shaped security evaluation model of computer network system in terms of the problem of security evaluation of computer network system. According to the principle of BP neural network, the BP security evaluation model of the neural network information system is constructed and the specific steps are discussed. For the purpose of solving the problem of the relatively larger security indexes in computer network system, the paper proposes the fuzzy comprehensive evaluation method to preprocess evaluation indexes in order to streamline the complexity of the evaluation system.