On Thu, Oct 14, 2010 at 10:58:43AM -0700, Alexander Welter wrote:
> Hi Will,
> 
> it's faily simple - the CU once had a kerborized NFS server, and they have 
> been *really* happy on the day they finally shut the system down ;-) , so it 
> will be a challange to convince them to go for kerberos again ...

Using krb properly does require a good understanding of configuration
(we've seen many problems there) however we are also aware that
debugging config/interop problems is not as easy as it should be (the
problem is that there are many layers of software involved with NFS
using krb for security and error details can get lost between the
layers).  We are working on this issue and others to improve the
robustness of NFS sec=krb* and I expect the next release of Solaris will
include these improvements.

Beyond that, just because a system is configured to do krb
authentication does not mean that NFS must use it (just comment out the
lines starting with krb5* in /etc/nfssec.conf).  It can be selectively
used by various services including SSH.  In Solaris 10 on up sshd will
try to do krb/gssapi auth if there is a host service key in the keytab
on the system.  Again, if one does not want sshd to support krb auth,
just edit the /etc/ssh/sshd_config to disable it.

-- 
Will Fiveash
Oracle
http://opensolaris.org/os/project/kerberos/
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