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.
The provider offers two strong encryption ciphers: AES-256-CBC and AES-256-GCM. Almost every VPN in the marketplace uses the former, which makes Surfshark the only service to offer the latter. The difference between the two is of something called “chosen ciphertext attacks”. AES-256-CBC uses a secure Message Authentication Code (MAC), along with the AES algorithm. Conversely, AES-256-GCM has built-in authentication codes, which makes the process a whole lot faster!
Billed at $99.00, you save a staggering 41% on the original monthly pricing, which is quite budget-friendly, to say the least. Once you sign up, you receive fast speeds for streaming/downloading all types of content and engage in P2P/torrenting. You also gain the ability of connecting to 5 devices simultaneously, and leveraging a 30-day refund guarantee.
Usually, it's the free services that throttle your usage in these ways. Some paid services will offer a trial, where you can transmit up to a certain data cap before being asked to sign up as a paying customer. That's actually pretty cool, because it gives you a chance to try out the performance of their service before paying, but it also gives the vendor a chance to make the money necessary to operate the service.
If you're of the iPhone persuasion, there are a few other caveats to consider for a mobile VPN. Some iPhone VPN apps don't use OpenVPN, even if the VPN service that made the app supports the protocol. That's because Apple requires additional vetting if a company wants to include OpenVPN with its app. VPN app developers have slowly started jumping through those extra hoops and are bringing support for protocols such as OpenVPN to iOS.