Intrusion detection using Data Mining

Intrusions are the activities that violate the security policy of system. Intrusion Detection is the process used to identify intrusions. An intrusion detection system (IDS) is a device or software application that monitors network or system activities for malicious activities or policy violations and produces reports to a management station. Based on the sources of the audit information used by each Intrusion Detection System (IDS), the IDSs may be classified into: · Host-based IDS: Get audit data from host audit trails. Detect attacks against a single host · Distributed IDS: Gather audit data from multiple hosts and possibly the network that connects the hosts. Detect attacks involving multiple hosts · Network-Based IDS: Use network traffic as the audit data source, relieving the burden on the hosts that usually provide normal computing services. Detect attacks from network.