Browsing by Author "Pathak, Sumedh"

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    Design of a Dynamically Extensible System for Network Monitoring using Mobile Agents
    (2001-11-20) Tripathi, Anand; Ahmed, Tanvir; Pathak, Sumedh; Carney, Megan
    We present here a framework together with a set of paradigms for mobile agent based active monitoring of network systems. In our framework mobile agents are used to perform remote information filtering and control functions. Such agents can detect basic events or correlate existing events that are stored in a database to enforce system policies. A system administrator can securely modify the monitoring policies and information filtering functions of its agents, or install new agents at a node. The framework presented here includes monitor, subscriber, auditor and inspector agents. The policies and itineraries of these agents can be modified dynamically. In response to certain trigger events agents may change their itineraries to correlate event data. We present here a set of experiments that we have conducted using the Ajanta mobile agent system to evaluate and demonstrate the capabilities of our mobile agent framework.
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    Paradigms for Mobile Agent-Based Active Monitoring of Network Systems
    (2001-11-20) Tripathi, Anand; Ahmed, Tanvir; Pathak, Sumedh; Carney, Megan; Dokas, Paul
    We present here the design of a framework for building future generation network monitoring systems using mobile agents. It is designed to support dynamic configurability, extensibility, active monitoring, and secure operations.The policies for monitoring and information filtering implemented by agents can be modified remotely and dynamically. New event types and their detection procedures can be inclemently added in this system, and any desired event data aggregation policies can be defined using the publisher-subscriber model. The use of Prolog-based logic databases provides high level and easy-to-use abstractions for defining and detecting new events based on correlation of lower level events. Active monitoring in this system is supported by the incorporation of trigger rules that cause detection of an event to be initiated when certain other events are observed. The use of Ajanta, a secure mobile agent programming platform, provides the necessary infrastructure for protecting the monitoring system from attacks. We present here a set of experiments that we conducted using this system to evaluate and demonstrate its capabilities.