Security Settings...

This button is available only if you have indicated the server should be enabled to support clients using the Transport Layer Security (TLS) or the Kerberos security protocols.

If TLS is checked, you are required to enter a key ring database by clicking this button.

You may also further customize your security settings by clicking this button.

If you select TLS, clicking the "Security Settings..." button allows you to set the following:

If you select Kerberos, clicking the "Security Settings..." button allows you to set the following: