Virtual Network : Virtual Private Network

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Introduction Along with the rapid development of internet, there is an increasing demand to connect to internal networks from remote sites. When employees work from home or go on business trips, they want to connect to the internal private networks of their companies over a secure connection. The demand of secure connection to internal network led to the technology of virtual private network A VPN is a private network technology that provides a way of protecting information that being transmitted over a public infrastructure (usually the Internet). As the name suggest, VPN uses “virtual “connections to connect remote site or remote employee to business 's private network. Users could build a virtual private tunnel to enter an secure internal network and to access resources and information. In this paper, I will discuss the definition of VPN, the types of VPN, how does VPN work by using different protocols, and what are some potential security risks and considerations that need to be taken into account when implementing a VPN.

I.What is VPN? Virtual Private Networks (VPN) are point-to-point connections across a private or public network such as the Internet. In a VPN, private two or more devices are communicated through a public network such as the Internet. Therefore, the communication is virtually but not physically there. The communication is also private because even though the devices are communicate over public network(internet), the

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