关键词: 电力信息化, 电力业务识别, 安全接入, 协议特征识别, AC算法

Abstract: Most business systems in electric power company use mobile terminals to access internal electricity information network, and signatures of protocols are used to identify different businesses while exchanging data between internal and external network. In order to solve problems of slow pattern matching and large memory consumption, a quick electricity business identify method based on AC algorithm is proposed. After analyzing security access procedure in electricity information network, protocol features of high-density traffic and security gateway performance bottlenecks, the proposed method groups signatures of protocols according to the transport layer protocols for parallel processing to increase matching throughput. The bitmap-based storage is selected to reduce memory consumption of rules library. At last, simulation results show that proposed method can increase matching throughput and reduce memory consumption.

Key words: power enterprise, security access, identification of protocol signatures, AC algorithm