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- Flow Based Network Intrusion Detection System Using Hardware-Accelerated NetFlow Probes
- Current network intrusion detection methods based on anomaly detection approaches suffer from comparatively higher error rate and low performance. Proposed flow based network intrusion detection system addresses these issues by using hardware-accelerated probes to collect unsampled NetFlow data from gigabit-speed network links and combining several anomaly detection algorithms by means...
- White papers 2008-09-30
- Some Clustering Algorithms to Enhance the Performance of the Network Intrusion Detection System
- Most current intrusion detection systems are signature based ones or machine learning based methods. Despite the number of machine learning algorithms applied to KDD 99 cup, none of them have introduced a pre-model to reduce the huge information quantity present in the different KDD 99 datasets. Clustering is an important...
- White papers 2008-09-07
- An Analysis of Network Scanning Traffic as It Relates to Scan-Detection in Network Intrusion Detection Systems
- Network Intrusion Detection is, in a modern network, a useful tool to detect a wide variety of malicious traffic. The ever present prevalence of scanning activity on the Internet is fair justification to warrant scan detection as a component of network intrusion detection. Whilst current systems are able to perform...
- White papers 2008-08-14
- Gnort: High Performance Network Intrusion Detection Using Graphics Processors
- The constant increase in link speeds and number of threats poses challenges to Network Intrusion Detection Systems NIDS, which must cope with higher traffic throughput and perform even more complex per-packet processing. This paper presents an intrusion detection system based on the Snort open-source NIDS that exploits the underutilized computational...
- White papers 2008-06-17
- Ensemble of One-Class Classifiers for Network Intrusion Detection System
- To achieve high accuracy while lowering false alarm rates are major challenges in designing an intrusion detection system. In addressing this issue, this paper proposes an ensemble of one-class classifiers where each uses different learning paradigms. The techniques deployed in this ensemble model are; Linear Genetic Programming LGP, Adaptive Neural...
- White papers 2008-05-29
- CAMNEP: Agent-Based Network Intrusion Detection System
- This paper presents a prototype of agent-based intrusion detection system designed for deployment on high-speed backbone networks. The main contribution of the system is the integration of several anomaly detection techniques by means of collective trust modeling within a group of collaborative detection agents, each featuring a specific detection algorithm....
- White papers 2008-05-16
- An Immune Inspired Network Intrusion Detection System Utilising Correlation Context
- Network Intrusion Detection Systems NIDS are computer systems which monitor a network with the aim of discerning malicious from benign activity on that network. While a wide range of approaches have met varying levels of success, most IDSs rely on having access to a database of known attack signatures which...
- White papers 2008-04-08
- Detecting and Preventing Attacks Using Network Intrusion Detection Systems
- Intrusion detection is an important technology in business sector as well as an active area of research. It is an important tool for information security. A Network Intrusion Detection System is used to monitor networks for attacks or intrusions and report these intrusions to the administrator in order to take...
- White papers 2008-03-05
- Selective Alerts for Runtime Protection of Distributed Systems
- Network Intrusion Detection Systems NIDS are popular components for a fast detection of network attacks and intrusions, but their efficacy is limited by the high numbers of false alarms that affect them. As a consequence, system administrators, that have to manually manage an overwhelming amount of intrusion alerts, tend to...
- White papers 2008-01-30
- 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
- Fast and Scalable Pattern Matching for Network Intrusion Detection Systems
- High-speed packet content inspection and filtering devices rely on a fast multi-pattern matching algorithm which is used to detect predefined keywords or signatures in the packets. Multi-pattern matching is known to require intensive memory accesses and is often a performance bottleneck. Hence specialized hardware-accelerated algorithms are required for line-speed packet...
- White papers 2008-01-01
- Exploiting Stateful Inspection of Network Security in Reconfigurable Hardware
- One of the most important areas of a network Intrusion Detection System NIDS, stateful inspection, is described in this paper. The paper presents a novel reconfigurable hardware architecture implementing TCP stateful inspection used in NIDS. This is to achieve a more efficient and faster network intrusion detection system as todays'...
- White papers 2008-01-01
- Enhancing Interoperability and Stateful Analysis of Cooperative Network Intrusion Detection Systems
- A traditional Network Intrusion Detection System NIDS is based on a centralized architecture that does not satisfy the needs of most modern network infrastructures characterized by high traffic volumes and complex topologies. The problem of decentralized NIDS based on multiple sensors is that each of them gets just a partial...
- White papers 2007-12-04
- ATLANTIDES: An Architecture for Alert Verification in Network Intrusion Detection Systems
- This paper presents an architecture1 designed for alert verification (i.e., to reduce false positives) in network intrusion-detection systems. The technique in this paper is based on a systematic and automatic anomaly-based analysis of the system output, which provides useful context information regarding the network services. The false positives raised by...
- White papers 2007-09-19
- Agent-Based Network Intrusion Detection System
- The paper presents security platform based on agents as an efficient and robust solution for high-performance intrusion detection system designed for deployment on high-speed network links. The proposed detection algorithm is based on extension of trust modeling techniques with representation of uncertain identities, context representation and implicit assumption that significant...
- White papers 2007-08-17
- High-Performance Network Intrusion Detection Through Parallelism
- Network intrusion detection has become increasingly popular in recent years due to the proliferation of Internet-based security attacks. Network Intrusion Detection Systems NIDS inspect the content of incoming packets on a network for known attacks and alert the operator when they are found. Intrusion detection is computationally expensive, and this...
- White papers 2007-05-01
- New Trend of Intrusion Detection System for High-Speed Networks
- Network Intrusion Detection System NIDS is an important and practical tool for network security. To guarantee a precise detection the NIDS must detect packets at a wire speed. However, with the recent trend of high-speed networks, the capability of a single NIDS can not meet the speed's demand, resulting in...
- White papers 2007-01-25
- A Java Based Network Intrusion Detection System (IDS)
- The number of hacking and intrusion incidents is increasing alarmingly each year as new technology rolls out. Unfortunately in today's digitally connected world, there is no place to hide. DNS, NSlookup, Newsgroups, web site trawling, e-mail properties etc. are just some of the many ways in which one can be...
- White papers 2006-10-03
- Backtracking Algorithmic Complexity Attacks Against a NIDS
- Network Intrusion Detection Systems NIDS have become crucial to securing modern networks. To be effective, a NIDS must be able to counter evasion attempts and operate at or near wire-speed. Failure to do so allows malicious packets to slip through a NIDS undetected. This paper explores NIDS evasion through algorithmic...
- White papers 2006-09-22
- A Parallel Architecture for Stateful Intrusion Detection in High Traffic Networks
- In a scenario where network bandwidth and traffic are continuously growing, network appliances that have to monitor and analyze all flowing packets are reaching their limits. These issues are critical especially for Network Intrusion Detection Systems NIDS that need to trace and reassemble every connection, and to examine every packet...
- White papers 2006-09-10
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