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Re: require StartTLS
Am Sun, 26 Feb 2012 12:39:26 +0100
schrieb Daniel Pocock <email@example.com>:
> On 26/02/12 12:15, Dieter KlÃnter wrote:
> > Am Sun, 26 Feb 2012 11:49:14 +0100
> > schrieb Daniel Pocock <firstname.lastname@example.org>:
> >> Is there some way to ensure that a client who connects on port 389
> >> can do nothing without StartTLS?
> >> Or is it necessary to just disable port 389 and only listen for
> >> ldaps:/// ?
> > read on TLS OPTIONS in
> > man ldap.conf(5) and man slapd.conf(5)
> Thanks for the fast reply
> I'm not keen to rely on ldap.conf (client side config) - I want to
> enforce a preference for TLS from the server side, to avoid a
> situation where some application might be configured non-TLS by
> I've looked at the TLS options and I have TLS running fine already. I
> notice the TLSCipherSuite option sets the cipher level within TLS, but
> it doesn't appear to guarantee that TLS is used.
>From man slapd.conf
demand | hard | true
These keywords are all equivalent, for
compatibility reasons. The client certificate is
requested. If no certificate is provided, or a bad
certificate is provided, the session is immediately terminated.
> To make an analogy, in postfix, I require `plain' authentication: but
> the client is not allowed to try to authenticate until it has done
> StartTLS, because I never want a client to try sending a password
> over a channel that is not encrypted.
Postfix is a LDAP client, thus all client configurations apply
according to man ldap.conf(5).
Dieter KlÃnter | Systemberatung
GPG Key ID:DA147B05