Re: [389-users] starttls does not work with chaining backend

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On Monday 13 September 2010 23:48:45 Rich Megginson wrote:
> Jacek Nykis wrote:
> > On Tuesday 07 September 2010 16:04:22 Rich Megginson wrote:
> >> Jacek Nykis wrote:
> >>> On Friday 03 September 2010 16:30:34 Rich Megginson wrote:
> >>>> Jacek Nykis wrote:
> >>>>> On Thursday 02 September 2010 18:45:44 Rich Megginson wrote:
> >>>>>> Jacek Nykis wrote:
> >>>>>>> Hi,
> >>>>>>> 
> >>>>>>> 
> >>>>>>> 
> >>>>>>> I am trying to setup chaining backend and I encountered some
> >>>>>>> problems.
> >>>>>>> 
> >>>>>>> I setup nsBackendInstance object with all attributes but it would
> >>>>>>> seem that "nsusestarttls" does not have any effect. Here is what
> >>>>>>> happens:
> >>>>>>> 
> >>>>>>> 
> >>>>>>> 
> >>>>>>> If I use ldaps over port 636 everything is fine:
> >>>>>>> 
> >>>>>>> nsusestarttls: off
> >>>>>>> 
> >>>>>>> nsfarmserverurl: ldaps://xxx:636
> >>>>>>> 
> >>>>>>> 
> >>>>>>> 
> >>>>>>> But when I change values to below it stops:
> >>>>>>> 
> >>>>>>> nsusestarttls: on
> >>>>>>> 
> >>>>>>> nsfarmserverurl: ldap://xxx:389
> >>>>>>> 
> >>>>>>> 
> >>>>>>> 
> >>>>>>> Logs on master server suggest that slave does not use startTLS when
> >>>>>>> connecting.
> >>>>>>> 
> >>>>>>> 
> >>>>>>> 
> >>>>>>> On slave server I can see this:
> >>>>>>> 
> >>>>>>> [02/Sep/2010:15:53:22 +0000] conn=1 fd=64 slot=64 connection from
> >>>>>>> <client IP> to <Slave IP>
> >>>>>>> 
> >>>>>>> [02/Sep/2010:15:53:22 +0000] conn=1 op=0 EXT
> >>>>>>> oid="1.3.6.1.4.1.1466.20037" name="startTLS"
> >>>>>>> 
> >>>>>>> [02/Sep/2010:15:53:22 +0000] conn=1 op=0 RESULT err=0 tag=120
> >>>>>>> nentries=0 etime=0
> >>>>>>> 
> >>>>>>> [02/Sep/2010:15:53:22 +0000] conn=1 SSL 256-bit AES
> >>>>>>> 
> >>>>>>> [02/Sep/2010:15:53:22 +0000] conn=1 op=1 BIND
> >>>>>>> dn="uid=xxx,ou=xxx,dc=xxx" method=128 version=3
> >>>>>>> 
> >>>>>>> [02/Sep/2010:15:53:22 +0000] conn=1 op=1 RESULT err=13 tag=97
> >>>>>>> nentries=0 etime=0
> >>>>>>> 
> >>>>>>> [02/Sep/2010:15:53:22 +0000] conn=1 op=-1 fd=64 closed - B1
> >>>>>>> 
> >>>>>>> 
> >>>>>>> 
> >>>>>>> On master:
> >>>>>>> 
> >>>>>>> [02/Sep/2010:15:53:22 +0000] conn=34 fd=64 slot=64 connection from
> >>>>>>> <Slave IP> to <Master IP>
> >>>>>>> 
> >>>>>>> [02/Sep/2010:15:53:22 +0000] conn=34 op=0 BIND
> >>>>>>> dn="uid=xxx,ou=xxx,dc=xxx" method=128 version=3
> >>>>>>> 
> >>>>>>> [02/Sep/2010:15:53:22 +0000] conn=34 op=0 RESULT err=13 tag=97
> >>>>>>> nentries=0 etime=0
> >>>>>>> 
> >>>>>>> 
> >>>>>>> 
> >>>>>>> We would prefer to use startTLS on port 389, does anybody know if
> >>>>>>> this is possible or if anything else is required to make it work?
> >>>>>> 
> >>>>>> What platform?  What version of 389-ds-base?
> >>>>> 
> >>>>> Hi,
> >>>>> 
> >>>>> I am using CentOS 5.5 x86_64 on all machines.
> >>>>> 389-ds-base v 1.2.6
> >>>> 
> >>>> which version of 1.2.6?  1.2.6-1, the official released version, or
> >>>> one of the .a or .rc releases?
> >>> 
> >>> Sorry I should have been more specific:
> >>> 1.2.6-0.11.rc7
> >> 
> >> Does it work if you turn off the Require Secure Bind option on the
> >> master?
> >> http://www.redhat.com/docs/manuals/dir-server/8.2/admin/html/configurin
> >> g-sp ecial-binds.html#requiring-secure-binds
> > 
> > I have just tested and yes if I disable Require Secure Bind option on
> > master everything works fine.
> 
> Ok.  Please file a bug with the exact steps to reproduce.

Bug reported:
https://bugzilla.redhat.com/show_bug.cgi?id=633803

thank you for looking into this issue.

> >>>>> I also noticed something strange. I am trying to setup global
> >>>>> password lockout policy:
> >>>>> http://www.redhat.com/docs/manuals/dir-server/ag/8.0/Managing_Replica
> >>>>> ti on - Replicating-Password-Attributes.html
> >>>>> 
> >>>>> When I set "passwordIsGlobalPolicy" to off problem disappears and I
> >>>>> can bind and change passwords fine with startTLS on port 389. When I
> >>>>> set it to on I cannot even bind.
> >>>> 
> >>>> err=13 is LDAP_CONFIDENTIALITY_REQUIRED - which means you attempted a
> >>>> SIMPLE BIND (i.e. DN and password) over a clear text connection.  The
> >>>> log from the master shows that the connection attempt was made without
> >>>> LDAPS or a startTLS operation.
> >>> 
> >>> Yes. To be precise it is Slave server trying to chain request to Master
> >>> with no startTLS. The problem is that this happens despite
> >>> nsusestarttls attribute set to "on".
> >>> 
> >>> It looks this way:
> >>> Client -----> Slave(read only) -----> Master
> >>> 
> >>> With "passwordisglobalpolicy: off" client binds to read only Slave
> >>> using startTLS fine and everything works fine including password
> >>> change which is chained to Master.
> >>> 
> >>> As soon as I set "passwordisglobalpolicy: on" on Slave it all brakes.
> >>> Client cannot bind against Slave and I can see err=13 on Master during
> >>> bind attempt.

-- 
Jacek Nykis
IS Unix Frontend Engineer

Fax: +44 (0) 20 8834 8001
Yahoo! Messenger: nykisj


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