Voluntary tunneling occurs when a client computer or routing server creates a virtual connection to the target tunnel server. To accomplish this, tunneling client software and the appropriate tunneling protocol must be installed on the client computer. For the protocols discussed in this technical reference, voluntary tunnels require an IP connection (either LAN or dial-up).

Central America isn’t the first place you’d think of when it comes to cutting edge technology, but NordVPN is up there with the best VPN services in 2018. It has 1015 servers in 59 countries, supports up to six devices simultaneously, runs 2048-bit encryption and has a feature list including an automatic kill switch, dedicated IP addresses, strong DNS leak protection and the ability to pay in Bitcoin. For relatively short connections performance was superb, although we did notice a little latency creeping in from time to time for very long distance connections. However, browsing remained snappy and performance wasn’t degraded significantly. We’d recommend hunting the site for its free trial and if you like it, signing up for the 3-year plan which is currently going for just $99!

We wouldn’t want you to have to put up with any of that, so we tested over 100 free VPNs to see which ones are the best of the best. We’re happy to say we found several that meet our strict security standards. Are they the perfect solution? Definitely not, but if you’re looking for a free VPN that can get the job done, you should be able to find one here that can suit your needs.


Latency is a measurement of time between when your computer sends a request and when it receives a response. It's often called ping time. Lots of things can affect latency; the distance your request physically travels through fiber has a big impact, for example. Latency is measured in milliseconds, however, so even a large increase may not be noticeable to the average user. Latency is very important when playing video games over a VPN, as lower latency means a more responsive experience with less lag.
Also important is the protocol the VPN service uses. Connecting to a VPN service using the OpenVPN protocol generally yields a faster, more reliable experience. Plus, OpenVPN is, as the name implies, open-source. That means it has been picked over for flaws and exploits by thousands of volunteers. If you're concerned about speed and security, selecting a service that supports OpenVPN and makes it available by default is important.

Extensible Authentication Protocol-Transport Layer Security (EAP-TLS) is an EAP type that is used in certificate-based security environments. If smart cards are used for remote access authentication, EAP-TLS is the required authentication method. The EAP-TLS exchange of messages provides mutual authentication, negotiation of the encryption method, and encrypted key determination between the remote access client and the authenticator. EAP-TLS provides the strongest authentication and key-determination method.
Supported Client Software Android, Chrome, Firefox, iOS, Linux, macOS, Windows Android, Chrome, iOS, Linux, macOS, Windows Android, Chrome, iOS, macOS, Opera, Windows Android, iOS, Linux, macOS, Windows Android, ChromeOS, iOS, Linux, macOS, Windows Android, iOS, Linux, macOS, Windows Android, iOS, macOS, Windows Android, iOS, macOS, Windows Android, Chrome, Firefox, iOS, Linux, macOS, Windows Android, iOS, macOS, Windows
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