Goal of The Paper What exactly is a VPN? Why do you need a VPN? what are some of the technologies used in deploying a VPN? How does a VPN work?
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Goal of The Paper What exactly is a VPN? Why do you need a VPN? what are some of the technologies used in deploying a VPN? How does a VPN work? How many different types of VPNs? What are the advantages and disadvantages? What is the VPN future scope.
Introduction The Internet has changed the way what we do business VPNs achieve one or more of the following goals: connect users securely their own corporate network (remote access) link branch offices to an enterprise network (intranet) extend organizations' existing computing infrastructure to include partners, suppliers and customers (extranet).
What is a VPN A Virtual Private Network (VPN) is a group of two or more computer systems, typically connected to a private network (a network built and maintained by an organization solely for its own use) with limited public- network access, that communicates “securely” over a public network.
Advantages of VPN Cost Savings - replace expensive dedicated leased lines - replace modem pools and eliminate long distance dial-up fees. - increase business efficiency
Advantage of VPNs Easy Configuration - allocating IP addresses - creating user accounts on the gateway or authentication server
Disadvantage of VPNs VPNs require an in-depth understanding of public network security issues The QoS depends on factors largely outside of control VPN technologies from different vendors may not work well VPNs need to accommodate protocols Latency
The future of VPN Depend mainly on industry dynamics VPNS should increase if standards solidify and vendor products interoperate fully with other The use of VPN will increase if companies can measure the significant value