Cisco Systems WRVS4400NRF Manuale Utente

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Planning Your Virtual Private Network (VPN)
What is a VPN?
Cisco WRVS4400N Wireless-N Gigabit Security Router with VPN Administration Guide
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VPN Router to VPN Router
An example of a VPN router-to-VPN router VPN would be as follows. At home, a 
telecommuter uses his VPN router for his always-on Internet connection. His router 
is configured with his office’s VPN settings. When he connects to his office’s router, 
the two routers create a VPN tunnel, encrypting and decrypting data. As VPNs 
utilize the Internet, distance is not a factor. Using the VPN, the telecommuter now 
has a secure connection to the central office’s network, as if he were physically 
connected. For more information, refer to