Paper Info
Title
Towards a scalable and flexible architecture for virtual private networks
Abstract
Virtual Private Networks (VPNs) are commonly used to provide secure connectivity over public networks. VPNs use tunnels to provide encryption, compression, and authentication functions, which are identically applied to every packet passing through them. However, this behavior may be overly rigid in many situations where the applications require different functions to be applied to different parts of their streams. Current VPNs are unable to offer such differential treatment, posing a heavy computational burden on edge routers, reducing their flexibility and degrading network performance. Additionally, the administrative cost of maintaining these tunnels is as high as O(N2) for an N node VPN. In this paper, we propose and evaluate a flexible VPN architecture (called Flexi-Tunes) where within a single VPN tunnel, different VPN functions are applied to different packet streams. Flexi-Tunes also replaces the traditional point-to-point tunnels with packet switched tunnels that improve scalability by reducing administrative costs to O(N). Simulation of this enhanced model demonstrates 170% improvement in bandwidth and 40 times improvement in end-to-end delay.
Year
DOI
Venue
2005
10.1007/978-3-540-31957-3_68
ICN (2)
Keywords
Field
DocType
different part,different function,flexible vpn architecture,virtual private network,current vpns,administrative cost,flexible architecture,different packet stream,n node vpn,different vpn function,single vpn tunnel,vpns use tunnel,network performance,end to end delay
Virtual network,Computer science,Network packet,Network architecture,Computer network,Encryption,Packet switching,Distributed computing,Scalability,Network performance,Private network
Conference
Volume
ISSN
ISBN
3421
0302-9743
3-540-25338-6
Citations 
PageRank 
References 
1
0.45
3
Authors
2
Name
Order
Citations
PageRank
Shashank Khanvilkar1142.34
Ashfaq Khokhar247088.95