The 1998 and 1999 DARPA off-line intrusion detection evaluations assessed the performance of intrusion detection systems using realistic background traffic and many examples of realistic attacks. This paper discusses three extensions to these evaluations. First, the Lincoln Adaptable Real-time Information Assurance Testbed (LARIAT) has been developed to simplify intrusion detection development ...

Computer systems of today are subject to many attacks and it can be anticipated that these problems will increase in the future era. One way of protecting the systems is to use better authentication and other categories of preventive security mechanisms. These mechanisms do not offer good enough protection in most cases and they should therefore be complemented with monitoring and detection mec...

With the growth of hacking and exploiting tools and invention of new ways of intrusion, Intrusion detection and prevention is becoming the major challenge in the world of network security. It is becoming more demanding due to increasing network traffic and data on Internet. There are various approaches being utilized in intrusion detections, but unfortunately any of the systems so far is not co...

The security of wireless sensor networks is a topic that has been studied extensively in the literature. The intrusion detection system is used to detect various attacks occurring on sensor nodes of Wireless Sensor Networks that are placed in various hostile environments. As many innovative and efficient models have emerged in the last decade in this area, we mainly focus our work on Intrusion ...

As mobile ad hoc networks (MANET) have different characteristics from wired networks and even from standard wireless networks, there are new challenges related to security issues that need to be addressed. Due to its unique features such as open nature, lack of infrastructure and central management, node mobility and change of dynamic topology, prevention methods from attacks on them are not en...

Security of the computer system and network is at continual risk due the progressive technological advancements in the field of information security. This concern has brought up the necessity of a system or mechanism which constantly keeps an eye on the illegitimate activities. Several mechanisms have been proposed for this purpose, namely antivirus, firewall, intrusion detection system etc. In...

This paper describes a set of metrics that will help administrators of distributed, real-time (clustered) computer facilities to select the best intrusion detection system for their facilities. The metrics herein are the subset of our general metric set that particularly impact real-time and distributed processing issues. We discuss related works in this field, the role of intrusion detection i...

This paper proposes a group of criteria for evaluating Intrusion Detection Systems (IDS for short). In this article, an existing evaluation strategy of intrusion detection system is going to be briefly introduced as a case to be assessed against our proposed criteria. Intrusion Detection Systems are critical components to the primary defence of computer system and network security. An evaluatio...

The goal of an intrusion detection system (IDS) is to identify authorized and unauthorized intruders by differentiating anomalous network activity from normal network traffic. Data mining methods have been used to build automatic intrusion detection systems. The central idea is to utilize auditing programs to extract a set of features that describe each network connection or host session, and a...

Most anomaly based NIDS employ supervised algorithms, whose performances highly depend on attack-free training data. Moreover, with changing network environment or services, patterns of normal traffic will be changed. In this paper, we developed intrusion detection system is to analyses the authentication records and separate UNFEIGNED and fraudulent authentication attempts for each user accoun...