tnv is intended for network traffic analysis to facilitate learning what constitutes 'normal' activity on a network, investigating packet details security events, or network troubleshooting. tnv can open saved libpcap (from tcpdump, windump, ethereal, etc.) formatted files or capture live packets on the wire, and export data in libpcap format or save the data to a MySQL database to enable examining trends over time.

The Network Visualizer is released as open source under the MIT license. Initially begun by Dr. John Goodall, ongoing development of tnv is sponsored by Secure Decisions.

For more information on tnv, visit the Sourceforge home page.