An Interactive Network Topology Visualization Tool with Visual Auditing Support
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1 An Interactive Network Topology Visualization Tool with Visual Auditing Support João Paulo S. Medeiros 1, Selan Rodrigues Santos 2 <joaomedeiros@dca.ufrn.br>, <selan@dimap.ufrn.br> 1 Department of Computer Engineering and Automation DCA 2 Department of Informatics and Applied Mathematics DIMAp Federal University of Rio Grande do Norte UFRN Frascati, Italy, Oct João Paulo S. Medeiros p. 1
2 Agenda Introduction Motivation Requirements Related work Network Security Nmap Visualization Reference Model The Application Some Features Case Studies Final Considerations João Paulo S. Medeiros p. 2
3 Introduction Motivation Data retrieval and visualization is a challenge for large networks; Data presentation is generally textual; Information Visualization can be applied to network related data; These techniques can be used to provide an effective network topology representation. João Paulo S. Medeiros p. 3
4 Introduction Requirements A network visualization tool must... Be able to represents large networks (more than hundreds of nodes); Provide mechanisms to navigate the network topology and its data; Afford a simple and complete (all data) visual representation; Get rid of or offer solutions for data occlusion. João Paulo S. Medeiros p. 4
5 Introduction Related Work There are problems with existing network visualization tools: fe3d: the three-dimensional approach implies data occlusion; Nagios: the radial visualization is good, but it lacks features; Cheops-ng: it is not based on solid information visualization techniques. João Paulo S. Medeiros p. 5
6 Network Security Nmap Tool used to acquire network data. Features: Detect networks devices (routers, firewalls, wireless access points,...); Detect remote operating system (OS fingerprinting); Perform Ports scan and service discovery (FTP, DNS, HTTP,...); Discover Network topology(using Traceroute); Determine link latency and route disruption. João Paulo S. Medeiros p. 6
7 Visualization Reference Model (Stuart Card) Used reference model. João Paulo S. Medeiros p. 7
8 Visualization Reference Model (phases) Data Transformation Data tables organized in variable types; Visual Mappings Association between data tables and retinal variables; Node-links diagrams (radial layout); Visual marks + graphical properties; View Transformations Navigation (animation, zooming, panning, reorganization of nodes); Detail-on-demand; Strategies to handle occlusion (filtering, fisheye distortion, subgraph collapsing). João Paulo S. Medeiros p. 8
9 The Application João Paulo S. Medeiros p. 9
10 Some Features Open ports details; Filtered ports; Running services information; Detailed traceroute. Detail on demand. João Paulo S. Medeiros p. 10
11 Some Features Collapsing(grouping) nodes. João Paulo S. Medeiros p. 11
12 Some Features Fisheye based effect. João Paulo S. Medeiros p. 12
13 Case Study Brazilian Universities Node shape; Color and size; Line thickness; Icons; Orange lines; Dashed lines. 50 Brazilian universities(238 nodes). João Paulo S. Medeiros p. 13
14 Case Study Brazilian Universities Several hosts have security problems; All hosts have filtered ports; We can identify switches, routers and WAPs; Alternative routes; Hop counting; Network bottlenecks. João Paulo S. Medeiros p. 14
15 Case Study Large Networks To handle occlusion: Filtering; Subgraph collapsing; Fisheye distortion. Visualization of 1000 nodes. João Paulo S. Medeiros p. 15
16 Final Considerations Nmap/Umit Integration Radialnet was developed during Google Summer of Code 2007; Has been integrated to Umit (Nmap frontend); Added to Nmap/Zenmap. Conclusion Information Visualization models and techniques can help network security management! Future Work Perform a cross-referencing between captured data and NIST vulnerability database; Use other tools to acquire data can extend applicability: Network administration; Load balancing analysis. João Paulo S. Medeiros p. 16
17 Contact João Paulo S. Medeiros p. 17
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