![]() The documents showed that it could crack OpenVPN, but only if a pre-shared key was used. In large part this is due to documents leaked by Edward Snowden in 2013, which showed that the NSA could crack most VPN protocols in use at the time. Pros Secureĭespite being 20 years old, OpenVPN is still widely regarded as the most secure VPN protocol available. OpenVPN remains the most widely supported protocol by commercial VPN services, although this dominance is beginning to be challenged by WireGuard. OpenVPNįirst released in 2001, OpenVPN is an open-source VPN protocol that uses the OpenSSL library, TLS, plus a variety of other technologies to create a VPN connection that is both secure and stable. The ability to run OpenVPN in TCP mode also gives it greater built-in anti-censorship capabilities than WireGuard. ![]() OpenVPN is beginning to show its age in terms of speed, performance, and efficiency, but remains widely regarded as the most secure and battle-tested VPN protocol available. WireGuard represents cutting-edge VPN technology and is cryptographically secure, highly efficient, and fast. OpenVPN and WireGuard® are VPN protocols used to secure the connection between your device and a VPN server. In addition to this, our Stealth obfuscation protocol is based on an implementation of WireGuard run over TCP. Update March 2023: While WireGuard continues to officially only support UDP, Proton VPN has now developed an implementation of WireGuard that runs over TCP.
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