Cyberinfrastructure and Software Development Research |
Cyberinfrastructure and Software Development ResearchSecure VideoconferencingWe are investigating proxy solutions and firewall configurations that enable university campus networks to support secure Videoconferencing (H.323 Videoconferencing with Firewall/NAT traversal). Earlier attempts to deploy secure Videoconferencing resulted in degraded video performance that annoyed end-users. Vendor-specific proxy solutions have not become popular due to interoperability issues. Solutions that involve the isolation of H.323 video equipment using a De-Militarized Zones (DMZ) have inhibited campus-wide Videoconferencing deployment. Newer standards-compliant proxies and end-points have emerged recently to address the above secure videoconferencing issues. In this project, we are evaluating different secure Videoconferencing architectures featuring solutions such as the Polycom V2IU, GNU Gatekeeper proxy, and the "H.323 Fixup" for PIX firewalls. We are leveraging our research on objective video quality assessment techniques to qualify as well as compare the different secure Videoconferencing architectures under a variety of traffic load conditions.
Figure: Secure Videoconferencing Testbed Setup |
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