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'''VPN''' is an acronym for '''Virtual Private Network'''which uses public network infrastructures to provide connection or communication services for users who are travelling or in remote areas. VPN is a form of Wide Area Network ([[WAN]]) which utilizes the internet or private networks and special protocols to enable users to share files, conduct video conferencing, access to network resources, databases and websites.<ref>[http://computer.howstuffworks.com/vpn.htm How VPNs Work]</ref> It main objective is to provide a private and secure connection for users through a public network usually the internet.
'''VPN''' is an acronym for '''Virtual Private Network'''which uses public network infrastructures to provide connection or communication services for users who are travelling or in remote areas. VPN is a form of Wide Area Network ([[WAN]]) which utilizes the internet, private networks or service provider backbone network also known as the VPN backbone to enable users to share files, conduct video conferencing, access to network resources, databases and websites. VPN is used to provide a private and secure connection for users.<ref>[http://ptgmedia.pearsoncmg.com/images/1587051796/samplechapter/1587051796content.pdf Chapter 1: What is a Virtual Private Network]</ref> <ref>[http://computer.howstuffworks.com/vpn.htm How VPNs Work]</ref>
==VPN Devices==
There are different types of VPN devices utilized by consumers and providers to be able to have access to VPN services. These include:<ref>[http://ptgmedia.pearsoncmg.com/images/1587051796/samplechapter/1587051796content.pdf Chapter 1: What is a Virtual Private Network]</ref>
* '''Cusromer Network Devices'''
# '''Customer (C) devices'''— includes routers and switches set-up within the customer network. These devices have no direct connectivity to the service provider network. C devices are not aware of the VP
# '''Customer Edge (CE) devices'''— These devices are connected to the provider network and it is located at the edge of the customer network. Connection is done through the provider edge (PE) devices.
* '''Service Provider Devices'''
# '''Service Provider (P) devices'''— these are routers and switches that are not directly connected to customer networks. They are attached to the provider network. P devices are unaware of customer VPNs.
# '''Service Provider Edge (PE) devices'''— these devices are directly connected to customer networks through CE devices. They are aware of the VPN, if the devices are connected to PE-based VPNs.PE devices are classified as Provider Edge routers (PE-r),Provider Edge switches PE-s)and PE-rs, allows both routing and switching
==Different Types of VPN Services==
==Different Types of VPN Services==