Running a TLS based VPN (such as openvpn) on TCP port 443 will already look a lot like https. Although, it would probably be possible to guess it is a vpn from

Running a TLS based VPN (such as openvpn) on TCP port 443 will already look a lot like https. Although, it would probably be possible to guess it is a vpn from traffic patterns. The same8ght be trie of http/3 though.