摘要: Security of information is of utmost importance to any organization or individual, which depend on computer systems or Internet for business transactions, or source of information or research. Several preventive measures including identification and authentication, logical access control, audit trails, cryptosystems, digital signature and firewalls have been developed for the purpose of information security on computer systems. As a result of the inadequacies of these measures intrusion detection was introduced to compliment these techniques and hence guarantee full protection of computing resources. Intrusion detection system is the process of identifying and detecting unauthorized access or abnormal incursion, actions and events in the system, which provides information for timely counter measures. This thesis presents a systematic approach to the design and implementation of intrusion detection using machine …