L2TP VPN (layer two point tunneling protocol) is the oldest vpn (virtual private network) among other vpn protocols. L2TP VPN can be used on all devices ranging from Windows, Linux, Android, IOS and routers. This VPN is known for its very easy use and has the lowest data encryption compared to other VPN protocols. But it is quite safe to use for browsing activities and accessing sites that are blocked by the local government.