The State of the Art in Intrusion Prevention and Detection

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Preface

INTRODUCTION

Most of the security threats in various communications networks are posed by the illegitimate

entities that enter or intrude within the network perimeter, which could commonly be termed as

intruders. Sometimes a legitimate entity in a system could also be compromised in some way so

that an attacker-intended task could be performed for breaching the security of the system. To

tackle intrusions of various kinds, we commonly hear about intrusion detection systems (IDSs) and

intrusion prevention systems (IPSs) or a combination of both called IDPS (intrusion detection and

prevention systems). The main task of an IDS is to def ...