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[Making a low cost IPSec router on Linux and the assessment for practical use]
1School of Medicine, University of Occupational and Environmental Health, Japan. Yahatanishi-ku, Kitakyushu 807-8555, Japan.
Journal of UOEH
|September 26, 2001
Summary
Building a low-cost Virtual Private Network (VPN) router using Linux and FreeS/WAN is feasible. Performance impacts are minimal on external networks and acceptable for internal use, making Linux VPN routers a cost-effective solution.
Area of Science:
- Computer networking
- Network security
Context:
- Evaluating the performance of a custom-built IPSec router.
- Assessing the feasibility of low-cost Virtual Private Network (VPN) solutions.
Purpose:
- To determine the performance impact of an IPSec router built with Linux and FreeS/WAN.
- To ascertain the viability of using a Linux-based router for a fundamental VPN environment.
Summary:
- An IPSec router was constructed using Linux and FreeS/WAN on a PC/AT compatible machine.
- Performance tests (ping/ftp) were conducted internally and between the university and the internet.
- No significant performance differences were observed on external networks, attributing this to small packet sizes or effective VPN compression. Internal network performance decreased by 20-30%, deemed acceptable for practical use.
Impact:
- The study suggests that Linux-based VPN routers offer a cost-effective solution for establishing a fundamental VPN environment.
- The findings indicate that CPU load is not a significant issue for VPNs on low-speed networks.
- The research supports the selection of Linux VPN routers for users seeking affordable and functional VPN solutions.
