Abstract
In order to overcome the disadvantages of the traditional distributed intrusion detection system, an application-layer distributed intrusion detection model based on the C/S mode is proposed here. The new model, is composed of a main system of server and several sub-systems of clients, fully utilizes detection abilities of the client by means of computing the belief dynamically, while the cost is not increased. Theoretical analysis and experimental results show that the model is a simple structure, reasonable design and higher accuracy than the traditional models.
Highlights
With the development of network attack techniques, the traditional protecting methods such as digital encryption, access control and security certification can not meet the security
An application-layer distributed intrusion detection model based on the C/S mode is proposed
The new model, which has the properties of the C/S mode and host-based in the application-layer, fully utilizes the detected the abilities of client by means of computing the belief dynamically and overcomes the shortcomings of the traditional distributed IDS
Summary
With the development of network attack techniques, the traditional protecting methods such as digital encryption, access control and security certification can not meet the security. The new model, which has the properties of the C/S mode and host-based in the application-layer, fully utilizes the detected the abilities of client by means of computing the belief dynamically and overcomes the shortcomings of the traditional distributed IDS. The module of the application layer distributed intrusion detection system is shown, which includes the data monitor, data preprocessor, collaborative analyzer, risk evaluator and security manager. Their main functions are as follows: Data monitor: It can intercept packets in the network and get some important information, such as MAC/IP address, protocol type, port number and data length. The threat degree of a suspicious information is defined as follows:
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