ldap tls question

Ken Hornstein kenh at cmf.nrl.navy.mil
Thu Apr 16 13:51:12 EDT 2026


>In the matter of security there is the non answered second part of the
>question. How to verify server certificate even when using ldaps? I see
>no option to specify CA certificate or demanding server certificate
>verification.

FWIW, I personally wouldn't say ldaps is "much more secure" than start_tls,
but fine, it's not something I care to argue about.  But my memory is that
at least with OpenLDAP there is a configuration file where you can specify
all of these things.  Also since OpenLDAP links against a separate TLS
library you could put server CA certificates in the "usual place" where
the TLS library implementation looks for those things.  We use a non-public
PKI infrastructure for our LDAP server and we put those server certificates
in the appropriate place for the operating system and it Just Works.

--Ken


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