RE: Kerberos keytab file?

[Mike Cunningham <mcunning@xxxxxxx>]

Thanks Pat - I just did this and it did work. I also discovered that in qshell you can manually delete principals from the keytab file

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Patrick Botz
Sent: Tuesday, March 11, 2008 1:36 PM
To: Midrange Systems Technical Discussion
Subject: Re: Kerberos keytab file?

It is perfectly safe to delete this file and let the wizard create it again.
The wizard creates it based on information you provide plus some hostname
resolution stuff it does on both the client PC where the wizard is running
and on i5/OS.  If you rerun the wizard without deleting this file, a whole
new file is created (or is supposed to be created) -- i.e. you shouldn't
have to delete it.

But, I believe your confusion comes from the fact that when a single service
principal name (SPN) is added to the keytab file, THREE entries show up.
Kerberos does this so that it can support dynamically different encryption
and hashing strengths/algorithms/schemes. The GUI interfaces understand this
and let you deal with one entry rather then 3 individual entries. The
"keytab" commands are in the public domain and they show you the individual
entries for each principal.

Hope this helps/is understandable.


On Mon, Mar 10, 2008 at 8:58 AM, Mike Cunningham <mcunning@xxxxxxx> wrote:

> /QIBM/UserData/OS400/NetworkAuthentication/keytab/krb5.keytab
>
> Where does the above file come from?  When I do a strqsh and then ask for
> a keytab list I get a list of Principal's with some names that should not be
> there. I have gone through the reconfigure of Network Authentication Service
> under Security in Navigator and the principal name I want to get rid of is
> not shown but after completing the wizard and looking at the resulting
> krb5.keytab file it still has the extra names in the file.  Under Manage
> keytab and then the Details button is also does not show the extra names.
>  Would it be safe to delete the keytab file and let the wizard recreate it?
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--
Patrick Botz
VP, Security Consulting
Group8 Security, Inc.
pat.botz@xxxxxxxxxxxxxxxxxx
pcbotz@xxxxxxxxx
Office 507 285 9048
Cell 507 250 5644
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