International Journal of Engineering Research and Applications (IJERA)
Today network security, uptime and performance of network are important and serious issue in computer network. Anomaly is deviation from normal behavior which is factor that affects on network security. So Anomaly Extraction which detects and extracts anomalous flow from network is requirement of network operator. Anomaly extraction refers to automatically finding in a large set of flows observed during an anomalous time interval, the flows associated with the anomalous events. It is important for root cause analysis, network forensics, and attack mitigation and anomaly modeling.