Raw OpenVPN is very easy to distinguish, its handshake signature is very different from the regular TLS. OpenVPN is fine if you want to tunnel through a hotel

Raw OpenVPN is very easy to distinguish, its handshake signature is very different from the regular TLS. OpenVPN is fine if you want to tunnel through a hotel network that blocks UDP, but it's useless if you want to defeat the Great China Firewall or similar blocks.