NetSecRadar: A Visualization System for Network Security Situational Awareness

摘要

Situational awareness is defined as the ability to effectively determine an overall computer network status based on relationships between security events in multiple dimensions. Unfortunately, as the lack of tools to synthetically analyze the security logs generated by kinds of network security products, such as NetFlow, Firewall and Host Security, it is difficult to monitor and perceive network security situational awareness. Information visualization allows users to discover and analyze large amounts of information through visual exploration and interaction efficiently. Even with the aid of visualization, identifying the attack patterns from big multi-source data and recognizing the abnormal from visual clutter are still challenges. In this paper, a novel visualization system, NetSecRadar, is proposed for network security situational awareness based on multi-source logs, which can monitor the network and perceive the overall view of the security situation by using radial graph. NetSecRadar utilizes a hierarchical force-directed graph layout for arrangement of thousands of hosts to better use the available screen space, and provides the method to quantify the dangerous levels of the security events, and finds the correlations of security events generated by multi-source logs and perceives the patterns of abnormal in situational awareness, and synthesizes interactions, filtering and drill-down to understand the detail information. To demonstrate the system's capabilities, we utilize the VAST Challenge 2013 as case study.