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Re: SSL / Certificates / ... Some confusion


> X509v3 extensions:
>              X509v3 Basic Constraints:
>                  CA:FALSE
>              Netscape Cert Type:
>                  SSL Server

You can use this Certificate only for Server, not for Client-authentication.

Netscape Cert Type: should be
  SSL Client, SSL Server

if You would use the Certificate as Client/Server
(I would prefer this)

 SSL Client

if You would use the Certificate only as Client

Look for
in Your Openssl configuration file

manpage : config and x509

-- Klaus Lemkau

Am 12.04.2010 11:58, schrieb Götz Reinicke - IT-Koordinator:

since a couple of days I try to setup a provider and a consumer over ssl
following the documentation in a book [1] an dusing two servers. (Red
Hat 5.x, openssl-0.9.8e-12, openldap-2.3.43-3 )

Doing so I was confronted with a lot off different warnings/messages but
finaly I got the replication crypted.

The final step in the tutorial is to use the saslmech=external but the
messages I do get are different from the messages I should get.

I noticed and googeled some provider debug info and wanted to ask for
some prove or clarification or work around:

From the provider log:

TLS certificate verification: Error, unsupported certificate purpose
TLS trace: SSL3 alert write:warning:bad certificate
connection_read(13): unable to get TLS client DN, error=49 id=1

From a posting from 2006 and the answere from Howard Chu [2] I think I
do have the same problem: My consumer server certificate "should be"
from the providers view a client certificate.

From the certificate:

X509v3 extensions:
             X509v3 Basic Constraints:
             Netscape Cert Type:
                 SSL Server

Am I wrong, right, lost, ... Is there a workaround or any step while
creating the certificates?

Thanks once more and best regards,


[1] http://www.galileocomputing.de/katalog/buecher/titel/gp/titelID-1801
[2] http://www.openldap.org/lists/openldap-software/200604/msg00202.html

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