BSDCon 2002 Abstract
A FreeBSD based low cost broadband VPN
router for a Telemedicine Application
Gunther Schadow, Regenstrief Institute for Health Care, Indianapolis, IN
The author developed a small low cost broadband networking
router using FreeBSD to support a telemedicine application. Our router design
provides IPsec based virtual private networking (VPN) and quality of service
(QoS) arrangements, simultaneously supporting two-way real-time video and
audio, camera control, streaming video replay and medical record access over
the public Internet using Cable-modem links from physician’s homes to the
Internet. These routers have been critical for the implementation of the
telemedicine project after several other attempts with proprietary “solutions”
have failed. FreeBSD’s integrated IPsec code, QoS facility, firewall, and its
ability to squeeze the entire system down into a file system image of less than
8 MB, had been instrumental for the development of our routers. Above all,
however, this project would not have been possible without the availability of
the system’s source code, the ability to investigate bugs, rapid turn-around in
the user-support community, and the ability to add missing features into existing
software, which is made possible by the open source software development
- View the full text of this paper in
PostScript. Until February 2003, you will need your USENIX membership identification in order to access the full papers.
The Proceedings are published as a collective work, © 2002 by the USENIX Association. All Rights Reserved. Rights to individual papers remain with the author or the author's employer. Permission is granted for the noncommercial reproduction of the complete work for educational or research purposes. USENIX acknowledges all trademarks within this paper.
- If you need the latest Adobe Acrobat Reader, you can download it from Adobe's site.
- To become a USENIX Member, please see our Membership Information.