Excelentes tutoriales de todo lo que pueda llegar a hacer falta al usar SSL con y sin java: claves, certificados, keytool, openssl, interoperabilidad, browsers, servers, etc.
"WireGuard is an extremely simple yet fast and modern VPN that utilizes state-of-the-art cryptography. It aims to be faster, simpler, leaner, and more useful than IPSec, while avoiding the massive headache. It intends to be considerably more performant than OpenVPN."