These configuration files are focused more on compatibility than security.
They work with OpenVPN 2.3.2 through 2.4.7, and OpenSSL 1.0.0 through 1.1.1b
The level of security depends on the version of OpenVPN/OpenSSL you have.
The newer the version, the better the security.
Even with older versions, the cryptography used is still considered very strong.
If necessary, you can change the port in these configs to anything from 1 to 29999,
excluding ports 5061 and 5062. Those two are reserved for the Ed25519 and Ed448 configs,
and ports 30000-65535 are reserved for port forwarding.