VPN technology was developed to allow remote users and branch offices to access corporate applications and resources. To ensure security, the private network connection is established using an encrypted layered tunneling protocol and VPN users use authentication methods, including passwords or certificates, to gain access to the VPN. In other applications, Internet users may secure their transactions with a VPN, to circumvent geo-restrictions and censorship, or to connect to proxy servers to protect personal identity and location to stay anonymous on the Internet. However, some Internet sites block access to known VPN technology to prevent the circumvention of their geo-restrictions, and many VPN providers have been developing strategies to get around these roadblocks.
In general, the answer is yes, it is perfectly legal (and normal!) to use VPNs, even if you are in places like China where VPNs are restricted. VPNs are used every day by businesses and individuals throughout the world for basic privacy and security purposes. Businesses rely on VPN technology and encryption for security reasons and it would not make sense for this to ever become illegal.
A good VPN will have plenty of servers spread out over a large number of locations and countries, and you generally want a service that's based not in your own country or in a country that's good friends with the one you live in. Support for OpenVPN, the current standard for VPN protocols, is preferred, and you want to be able to connect multiple devices simultaneously.
A virtual private network (VPN) extends a private network across a public network, and enables users to send and receive data across shared or public networks as if their computing devices were directly connected to the private network. Applications running across a VPN may therefore benefit from the functionality, security, and management of the private network.
The globetrotter. This person wants to watch the Olympics live as they happen, without dealing with their crummy local networks. They want to check out their favorite TV shows as they air instead of waiting for translations or re-broadcasts (or watch the versions aired in other countries,) listen to location-restricted streaming internet radio, or want to use a new web service or application that looks great but for some reason is limited to a specific country or region.
Tunneling protocols can operate in a point-to-point network topology that would theoretically not be considered as a VPN, because a VPN by definition is expected to support arbitrary and changing sets of network nodes. But since most router implementations support a software-defined tunnel interface, customer-provisioned VPNs often are simply defined tunnels running conventional routing protocols.
KeepSolid boasts of having endpoints in 54 countries and specialised servers designed to allow you access to geo-locked streaming services undetected. While this allowed us easy access to American Netflix, the UK iPlayer endpoint was actually too slow to actually load any BBC’s content, while using the other UK endpoints were invariably detected by the website. Hopefully this will improve over time.
There are different levels of security protocols, each with its own level of security and features. Some of the most common are IPSec, L2TP, IKEv2, OpenVPN, and PPTP. OpenVPN is a newer technology, but it is highly configurable and easily bypasses firewalls in any country. L2TP isn’t capable of encryption; it instead creates a tunnel, and it should be paired with IPSec, which takes care of encryption. PPTP is a protocol that has been around since the mid-1990s, but because it does not encrypt, you will want to be sure to use another protocol with it that covers encryption. IKEv2 is an IPSec-based tunneling protocol that will reestablish a VPN connection if a user temporarily loses Internet connection.
These folks have been around since 2010, and don't log anything. They provide a generous five connections, a connection kill switch feature, and some good online documentation and security guidance. Our one disappointment is that their refund policy is 7-days instead of 30, but you can certainly get a feel for their excellent performance in the space of a week.