International Journal of Engineering Research and Applications (IJERA)
There is an increasing demand nowadays to connect to internal networks from distant locations. Employees often need to connect to internal private networks over the Internet (which is by nature insecure) from home, hotels, airports or from other external networks. Security becomes a major consideration when staff or business partners have constant access to internal networks from insecure external locations. VPN (Virtual Private Network) technology provides a way of protecting information being transmitted over the Internet, by allowing users to establish a virtual private \"Tunnel\" to securely enter an internal network, accessing resources, data and communications via an insecure network such as the Internet.