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network intrusion detection system (24 results)
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- A High-Performance Network Intrusion Detection System
- This paper presents a new approach for network intrusion detection based on concise specifications that characterize normal and abnormal network packet sequences. The specification language is geared for robust network intrusion detection by enforcing a strict type discipline via a combination of static and dynamic type checking. Unlike most previous...
- White papers 2008-01-01
- A Reconfigurable Architecture for Network Intrusion Detection Using Principal Component Analysis
- This paper develops architecture for Principal Component Analysis PCA to be used as an outlier detection method for high-speed Network Intrusion Detection Systems NIDS. PCA is a common statistical method used in multivariate optimization problems in order to reduce the dimensionality of data while retaining a large fraction of the...
- White papers 2008-01-01
- PARNIDS: A Scalable Network Intrusion Detection Loadbalancer
- Network Intrusion Detection Systems NIDS are becoming an increasingly important security measure. With rapidly increasing network speeds, the capacity of the NIDS sensor can limit the ability of the system to detect intrusions. The PARNIDS parallel NIDS architecture overcomes this limitation by distributing network traffic load over an array of...
- White papers 2008-01-01
- Network Intrusion Detection Through Adaptive Sub-Eigenspace Modeling in Multiagent Systems
- Nowadays, network security has become an extremely vital issue that beckons the development of accurate and efficient solutions capable of effectively defending the network systems and the valuable information journeying through them. This paper, a distributed multiagent Intrusion Detection System IDS architecture is proposed, which attempts to provide an accurate...
- White papers 2007-09-01
- A Feature Classification Scheme for Network Intrusion Detection
- One of the most important phases of the IDS/IPS implementation identifies the set of features that the system is going to use. This paper presents a feature classification schema for network intrusion detection intended to provide a better understanding regarding the features that can be extracted from network packets. Furthermore,...
- White papers 2007-07-01
- Unsupervised Anomaly Detection in Network Intrusion Detection Using Clusters
- Most current network Intrusion Detection Systems IDSs employ signature-based methods or data mining-based methods which rely on labelled training data. This training data is typically expensive to produce. Moreover, these methods have difficulty in detecting new types of attack. Using unsupervised anomaly detection techniques, however, the system can be trained...
- White papers 2007-01-01
- Packet Pre-Filtering for Network Intrusion Detection
- As Intrusion Detection Systems IDS utilize more complex syntax to efficiently describe complex attacks, their processing requirements increase rapidly. Hardware and, even more, software platforms face difficulties in keeping up with the computationally intensive IDS tasks, and face overheads that can substantially diminish performance. This paper introduces a packet pre-filtering...
- White papers 2006-12-05
- Enhancing Network Intrusion Detection With Integrated Sampling and Filtering
- The structure of many standalone Network Intrusion Detection Systems NIDSs centers around a chain of analysis that begins with packets captured by a packet filter, where the filter describes the protocols (TCP/UDP port numbers) and sometimes hosts or subnets to include or exclude from the analysis. This paper argues for...
- White papers 2006-07-07
- POSEIDON: A 2-Tier Anomaly-Based Network Intrusion Detection System
- Intrusion Detection Systems IDSs were introduced by Anderson and formalized later by Denning. Nowadays, there exist two main types of network intrusion detection methods: anomaly-based and signature-based. In signature-based methods, a characteristic trait of the intrusion is developed off-line, and then loaded in the intrusion database before the system can...
- White papers 2006-04-01
- A Study on Classification Techniques for Network Intrusion Detection
- Computer systems vulnerabilities such as software bugs are often exploited by malicious users to intrude into information systems. With the recent growth of the Internet such security limitations are becoming more and more pressing. One commonly used defense measure against such malicious attacks in the Internet is Intrusion Detection Systems...
- White papers 2006-02-24
- Network Intrusion Detection Using Random Forests
- Network Intrusion Detection Systems NIDSs have become an important component in network security infrastructure. Currently, many NIDSs are rule-based systems whose performances highly depend on their rule sets. Unfortunately, due to the huge volume of network traffic, coding the rules by security experts becomes difficult and time-consuming. Since data mining...
- White papers 2005-07-13
- Network Intrusion Detection: Evasion, Traffic Normalization, and End-to-End Protocol Semantics
- A fundamental problem for network intrusion detection systems is the ability of a skilled attacker to evade detection by exploiting ambiguities in the traffic stream as seen by the monitor. This paper discusses the viability of addressing this problem by introducing a new network forwarding element called a traffic normalizer....
- White papers 2001-05-22
- White Paper: Combining Network Intrusion Detection With Firewalls for Maximum Perimeter Protection
- Intrusion detection is a critical element in the overall electronic security infrastructure. When installed in conjunction with a firewall, an intrusion detection system IDS provides an additional layer of security that significantly decreases the risk of an attack going undetected. Firewalls have emerged as the primary tool to prevent unauthorized...
- White papers 2001-04-01
- Next Generation Intrusion Detection in High-Speed Networks
- The purpose of this paper is twofold—to briefly describe the inherent limits of these first-generation Network-based Intrusion Detection Systems NIDS, relative to the network architecture they are asked to protect, and to introduce the next generation of intrusion detection technology. Attacks against network assets continue to rise dramatically. Sophisticated tools...
- White papers
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- Blog posts 2008-12-04
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