Rich Megginson wrote:
That should be fine. Fedora DS can do the same thing e.g. with
server-to-server chaining and replication, using the server cert for
client cert auth. It just depends on the type of cert issued and/or
the trust flags on the cert.
If I understand correctly you're implying that server2server ssl
connections are handled with the same logic that client2server ssl?
Then it's strange, since I'm using multi-master replication with all s2s
connections using SSL (port 636). I've generated all the certificates
(for FDS servers and for OpenLDAP servers) using the same OpenSSL CA
openssl.cnf config file (but a slightly different configuration section
WRT subjectAltName field - see below).
The relevant fields of the OpenLDAP server's certificate are:
X509v3 extensions:
X509v3 Basic Constraints:
CA:FALSE
Netscape Cert Type:
SSL Server
...
X509v3 Subject Alternative Name:
email:postmaster@MY_DOMAIN_NAME
While the same fields of the FDS certificate are:
X509v3 extensions:
X509v3 Basic Constraints:
CA:FALSE
Netscape Cert Type:
SSL Server
...
X509v3 Subject Alternative Name:
DNS:servername2.MY_DOMAIN_NAME,
DNS:servername3.MY_DOMAIN_NAME
Other differences are only in key length, crypto algorithms and values
of serial numbers, fingerprint etc.
So the only one possibly relevant difference is that in OpenLDAP's cert
the subjectAltName field contains an e-mail address and in Fedora
Directory Server's it contains alternative DNS host names of the FDS
server. Might it be the cause?
I thought that there might be a similar method to tweak behaviour of
dirsrv (although not through nss.conf since dirsrv doesn't use
mod_nss and doesn't contain a http server in any part ), like some
undocumented setting in dse.ldif. However, more correct fix turned
out to be disallow certificate-based client authentication.
See the RHDS 8.0 Admin Guide, Chapter 12 -
http://www.redhat.com/docs/manuals/dir-server/ag/8.0/ and
http://tinyurl.com/688w9y
See also the detailed information for all of the security/encryption
configuration entries and attributes - http://tinyurl.com/35qddb -
there is also an apparently undocumented entry cn=RSA, cn=encryption,
cn=config.
Yup, I've read that but there isn't anything conclusive over there. I
was counting on some undocumented configuration attribute that would
control which usages are allowed in client x.509 certs.
--
Best Regards,
Aleksander Adamowski
GG#: 274614
ICQ UIN: 19780575
http://olo.org.pl
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