[Fedora-directory-users] getting sh on RHAS5 to work with FDS.

Steven Jones Steven.Jones at vuw.ac.nz
Wed Sep 19 20:44:07 UTC 2007


Hi,

Ahhhh, I made good notes as I went along and I think can see my error,

============
7.	Generate the server certificate: 
../shared/bin/certutil -S -n "Server-Cert" -s \
"cn=vuw.ac.nz" -c "CA certificate" -t "u,u,u" -m 1001 -v \
120 -d . -z noise.txt -f pwdfile.txt
============

cn should have been "vuwunicvfdsm001.vuw.ac.nz" and not "vuw.ac.nz".....

RHAS4 cannot check too closely as it seems to be working, for Debian and
RHAS5 not....

So, if I have multiple LDAP [master] servers each LDAP server's key
needs installing on the client?  Slaves as well?

I though of a DNS issue but that looks OK.

Thanks,

Steven Jones
Senior  Linux/Unix/San/Vmware System Administrator
APG -Technology Integration Team
Victoria University of Wellington
Phone: +64 4 463 6272

-----Original Message-----
From: fedora-directory-users-bounces at redhat.com
[mailto:fedora-directory-users-bounces at redhat.com] On Behalf Of Richard
Megginson
Sent: Wednesday, 19 September 2007 2:40 a.m.
To: General discussion list for the Fedora Directory server project.
Subject: Re: [Fedora-directory-users] getting sh on RHAS5 to work with
FDS.

Steven Jones wrote:
>
> An "improved" ldap.conf (with no ssl/TLS) for RHAS5
>
> ===============
>
> # http://www.padl.com
>
> base dc=vuw,dc=ac,dc=nz
>
> pam_password md5
>
> BASE dc=vuw,dc=ac,dc=nz
>
> TLS_REQCERT never
>
> uri ldap://ldap.vuw.ac.nz/
>
> ssl no
>
> tls_cacertdir /etc/openldap/cacerts
>
> ===============
>
> Trying TLS with,
>
> ===============
>
> #ssl setup
>
> # http://www.padl.com
>
> base dc=vuw,dc=ac,dc=nz
>
> pam_password md5
>
> BASE dc=vuw,dc=ac,dc=nz
>
> TLS_REQCERT allow
>
> #TLS_REQCERT never
>
> host ldap.vuw.ac.nz
>
> ssl start_tls
>
> uri ldap://ldap.vuw.ac.nz/
>
> tls_cacertdir /etc/openldap/cacerts
>
> ===============
>
> Produces this error,
>
> [root at vuwunicoadmin01 etc]# ldapsearch -x -ZZ '(uid=jonesst1)'
>
> ldap_start_tls: Connect error (-11)
>
> additional info: TLS: hostname does not match CN in peer certificate
>
> Which is an interesting error.....
>
Yes, very.
http://directory.fedoraproject.org/wiki/Howto:SSL#Basic_Steps
<quote>

NOTE - *Do not use cn=server-cert for your server certificate*. In step 
7 of the linked instructions, it says to use certutil .... -s 
cn=server-cert - this will cause clients to fail to validate the cert. 
Instead, you must use the fully qualified domain name of your server 
host as the value of the cn attribute in the subject DN. For example, if

your directory server hostname is foo.example.com, use

../shared/bin/certutil -S -n "Server-Cert" -s cn=foo.example.com -c "CA
certificate" \
-t "u,u,u" -m 1001 -v 120 -d . -z noise.txt -f pwdfile.txt

to generate your server cert. This is the minimum. You may wish to 
provide your clients with more details about your server. For more 
information, see RFC 1485 <http://www.ietf.org/rfc/rfc1485.txt>. You 
could choose to specify the subject DN like this:

../shared/bin/certutil ... -s
"cn=foo.example.com,ou=engineering,o=example corp,c=us" ...

</quote>

Note that this also means that if you use cn=foo.example.com, clients 
must be able to resolve the server's IP address to "foo.example.com". If

you don't care/can't do this, then use TLS_REQCERT never in your 
/etc/openldap/ldap.conf to make ldapsearch stop complaining. I highly 
recommend you do not do this though.
>
> regards
>
> Steven
>
>
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