When we say that in theory VPNs can’t be intercepted, that’s because VPNs are like any other form of security: if you use them on a device that’s already been compromised by malware such as keyloggers or other security threats then they can’t do their job properly. If you’re on Windows, then good quality, up to date anti-virus software isn’t a luxury. It’s absolutely essential.
To prevent middle-man access and to ensure that the data is sent via a secure tunnel, certain criteria should be met. The criteria include a DNS Leak Protection (over IPv4, IPv6 and WebRTC), encrypted traffic via a Private tunnel, and hopefully no logs of the data saved anywhere. However, if the government wants to see which websites and web locations a user visits, the ISP provider can demand and get that information. Thus, no real anonymity is achieved, but the specific data will be encrypted, secure and free from middle-man attacks.
It does not matter if a VPN offers strict no logging policies. If it exists outside every major surveillance alliance, or offers lightening speeds. The minute it leaks your IP, everything goes to the garbage, as your private identity comes forward. Buffered VPN, despite being new, follows through on all its promises. The DNS leak test did not reveal our true location.
Since we're living in a connected world, security and privacy are critical to ensure our personal safety from nefarious hacks. From online banking to communicating with coworkers on a daily basis, we're now frequently transferring data on our computers and smartphones. It's extremely important to find ways of securing our digital life and for this reason, VPNs have become increasingly common.
A P device operates inside the provider's core network and does not directly interface to any customer endpoint. It might, for example, provide routing for many provider-operated tunnels that belong to different customers' PPVPNs. While the P device is a key part of implementing PPVPNs, it is not itself VPN-aware and does not maintain VPN state. Its principal role is allowing the service provider to scale its PPVPN offerings, for example, by acting as an aggregation point for multiple PEs. P-to-P connections, in such a role, often are high-capacity optical links between major locations of providers.