joe wrote:

Do you have a disjoint name space or have you really tighted down your
security on those OUs?

Joe,


The security has not been tighted down too much. We have a limited number of people who can add machines to the OU.

As for your other question - I'm assuming you mean DNS names. The machines that have had the problem have different roots.

The DCs are dcX.b.c.fnal.gov where the regular servers and workstations are srvr1.fnal.gov and wks1.fnal.gov. We have a empty root - c.fnal.gov and users and computers reside in OUs that are in b.c.fnal.gov

the puzzling part to me is that the problem is random.

thanks for any light you can shine on this.

al


joe


-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Al Lilianstrom
Sent: Sunday, January 11, 2004 9:29 PM
To: [EMAIL PROTECTED]
Subject: [ActiveDir] computer accounts created without serviceprincipalname

Hi,

We have a w2k sp3 based domain and while troubleshooting a IIS problem we
noticed that the machine that was causing problems was only doing NTLM
authentication while the other servers the IIS server was serving were using
Kerberos authentication. We checked that our policies were being applied
properly - all ok. I talked with our local windows security expert and he
suggested checking for the existance of the serviceprincipalname as if it
wasn't there then the server would have no way of doing Kerberos as it could
not accept tickets. Checked the servers entry in AD and SPN was missing.
After it was put in manually everything started working properly.

I check one OU and came up with a significant number of machines without the
SPN. Some were upgrades from NT, some were new installs. I've been looking
on Microsoft for an article on what might be wrong and have come up empty.

Any ideas?

al

--


Al Lilianstrom
CD/CSS/CSI
[EMAIL PROTECTED]

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