Performance Evaluation for Remote Access VPN on Windows Server 2003 and Fedora Core 6

A Survey on Performance Evaluation of VPN

“…Basically, PPTP is an extension of PPP, which encapsulates PPP frames in IP datagram for transmission over an IP-based network, such as the Internet or over a private intranet [1]. In the data link layer PPTP, which is used to make secure tunnel for exchanging information, is one way to implement the so called VPN [11].…”

“…[2] It is for securing traffic on the network layer. [1] IPSec is an OSI Layer 3 protocol that supports network-level peer authentication, data origin authentication, data integrity, and data confidentiality and replay protection. [2].…”

“…However, this system is impractical for every enterprise and everyday users due to the cost, space, and time required for such installations. [1] Direct connected VPN usually allows for a small scale of secure connections into a private network over the public network. [8] VPN is a concept that proven cost effective technology for securing data that traverses over large distances.…”

“…The most recent solution to this problem has been IP baseVPN. [1]VPN maintaining privacy through the protocols. [3].so To enable secure access to sensitive resources a virtual private network (VPN) is almost a required piece of technology.…”

“…[3] The main purpose of a VPN is to give enterprises the same capabilities, or even better in some cases as the list below shows, as in private networks, but at a much lower cost. [1] Virtual Private Networks (VPN) has become an inexpensive methodology to secure connections between network sites that exist at different geographic locations. It is an alternative to owning or leasing expensive communication lines and provides same capabilities as dedicated connections, but at a fraction of the cost.…”