Creating a Complete Model of an Intrusion Detection System effective on the LAN

the Intrusion Detection Systems (IDS) are now an essential component in the structure of network security. The logs of connections and network activity, with a large amount of information, can be used to detect intrusions. Despite the development of new technologies of information and communication following the advent of the Internet and networks, computer security has become a major challenge, and works in this research are becoming more numerous. Various tools and mechanisms are developed to ensure a level of security to meet the demands of modern life. Among the systems is intrusion detection for identifying abnormal behavior or suspicious activities to undermine the legitimate operation of the system. The objective of this paper is the design and implementation of a comprehensive architecture of IDS in a network. Keywords—Intrusion Detection System; Characteristic; Architecture; modele.