Site to site VPN gives the user the freedom to have complete control over his/her privacy. In a nutshell, we can define private networks as those networks that do not allow any other organization or network to access it. On the other hand, public networks do not allow any other organization or group of organizations or individuals to have access to it. This is exactly where site-to-site VPN comes into play. Since the VPN enables you to have complete control over your traffic, you can say that you are in a private network. The majority of site-to-site VPNs that connect over the internet use IPsec.