抽象的

Study of intrusion detection systems

Cao Yonghui

This paper presents the methodologies of IDS technologies. Essentially, any system requiring security must be protected from attacks. Intrusiondetection systems are used to detect unusual activity in a network of computer systems to identify if activity is unfriendly or unauthorized in order to enable a response to that violation. To achieve this, there are two main types of IDS: network-based and host-based. This paper outlines these two types of IDS respectively and highlights the advantages of each kind.