Do not allow Connections without certificate

[debarshibasak]

Allowing connections without a certificate beats the purpose of SSL.

[kovalromank]

The TLS mode is preferTLS though, so even if allowConnectionsWithoutCertificates is false, clients can still connect without TLS.

Removing allowConnectionsWithoutCertificates would make more sense to me if TLS mode is requireTLS.

Maybe a better approach would be to move the TLS mode and allowConnectionsWithoutCertificates parameters to the start command to make it easier to configure the level of TLS security without creating a new config file?

[debarshibasak]

When you set TLS on the server, you want TLS to be enforced. Therefore, I think the second approach is the preferred method, in my opinion.