Design and Modelling of Internode: A Mobile Provider Provisioned VPN

This paper presents the design and architecture of a mobile Provider Provisioned VPN (PPVPN) together with a performance evaluation oriented model that allows first estimates of the VPN set-up delay to be computed. At the same time, some consequences of the discussion can be applied to the design of the VPN configuration parameters. Many different technologies and protocols are used: access is supplied through GPRS or WaveLANs, IP mobility is supported by Mobile IP, and the VPN is based on the IPSec protocol from IPv4. Also, PKI security is used to protect some registration processes. The proposed model is useful for planning the necessary capacity and resources of future mobile PPVPNs.