AW: AW: MS AD 2008R2 and bind

Tue Jan 3 15:31:17 UTC 2012

According to syslog the DCs do update tons of records all the time... A, PTR, SRV.
I didn't regulate them. Their IPs are allowed to do any updates.

---
Ing. Christian Melbinger
Netzwerk & Security

WienIT EDV Dienstleistungsgesellschaft mbH & Co KG
A-1030 Wien, Thomas-Klestil-Platz 6
tel: +43 (1) 90405 47188
fax: +43 (1) 90405 88 47188
mailto:christian.melbinger at wienit.at

-----Ursprüngliche Nachricht-----
Von: root at nachtmaus.us [mailto:root at nachtmaus.us] 
Gesendet: Dienstag, 03. Jänner 2012 14:17
An: Melbinger Christian; bind-users-bounces+root=nachtmaus.us at lists.isc.org; Carsten Strotmann (private)
Cc: bind-users at lists.isc.org
Betreff: Re: AW: MS AD 2008R2 and bind

The DC must not only be allow to update his A, AAAA (if applicable) and PTR records, he must also be able to update his SRV and TXT records. Please add the DC to the ACL for allow-updates on the zone that corresponds to the AD Domain/Kerberos zone, and then confirm that it is working by restarting Netlogon service (necessary, because IPCONFIG /registerdns only updates A, AAAA (if applicable) and PTR records, while the former regenerates the SRV records, et al). 

Hope that helps,

 -DTK

Sent via BlackBerry from T-Mobile

-----Original Message-----
From: Melbinger Christian <Christian.Melbinger at wienit.at>
Sender: bind-users-bounces+root=nachtmaus.us at lists.isc.orgDate: Tue, 3 Jan 2012 13:47:30 
To: Carsten Strotmann (private)<cas at strotmann.de>
Cc: bind-users at lists.isc.org<bind-users at lists.isc.org>
Subject: AW: MS AD 2008R2 and bind

Hello

Thanks for your answer, but unfortunately that's not the case.
When I do a nslookup like "nslookup internal.wienit.at", I get back the IPs of the DCs, speaking
Addresses:  10.4.4.4, 10.5.5.5

The error message
>The invalid IP addresses are 10.1.1.1; 10.2.2.2.
is pointing towards the dns-servers. (bind and linux, no windows there)

I also had an old dns server running on 10.3.3.3, which was included in the error message too. I shut it down but the ip only got removed from the error once I deleted the NS Record. (yeah forgot to do that)

any ideas?

---
Ing. Christian Melbinger
Netzwerk & Security

WienIT EDV Dienstleistungsgesellschaft mbH & Co KG
A-1030 Wien, Thomas-Klestil-Platz 6
tel: +43 (1) 90405 47188
fax: +43 (1) 90405 88 47188
mailto:christian.melbinger at wienit.at

-----Ursprüngliche Nachricht-----
Von: Carsten Strotmann (private) [mailto:cas at strotmann.de] 
Gesendet: Dienstag, 03. Jänner 2012 13:07
An: Melbinger Christian
Cc: bind-users at lists.isc.org
Betreff: Re: MS AD 2008R2 and bind

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Hello Christian,

On 1/3/12 11:00 AM, Melbinger Christian wrote:
> 
> So this is presumably not a problem of the bind servers themselves,
> but still, does anyone have an idea how to get rid of the error
> messages?
> 
> Anyone know the checkbox to unset? I didn?t find one?

from the error message you've seeing, the problem is that the domain
controller has already found DNS entries for itself in the DNS, but
the entries are pointing to a different IP Address than the domain
controller has.

The domain controller will not overwrite the existing entries. You
have to remove the wrong, stale entries and after that the domain
controller should be able to register (update) the address records
with the correct IP addresses. You can force this with a reboot or
with "ipconfig /registerdns" from the commandline.

The old IP addresses might be leftovers from a test, and have not been
properly removed when the IP addresses of the domain controller has
been changed.

Best regards

Carsten Strotmann

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Hi

My company moved to a 2008R2 Domain Controller environment. Now I see the following message in the windows log:

Title: This domain controller must register its correct IP addresses with the DNS server
Severity: Error
Category: Configuration
Issue: The Domain Name System (DNS) host resource records for this domain controller's fully qualified domain name currently map to the IP addresses that do not belong to this domain controller. The invalid IP addresses are 10.1.1.1; 10.2.2.2.
Impact: Other member computers and domain controllers in the domain or forest might not be able to locate this domain controller. This domain controller will not be able to provide a full suite of services.
Resolution: Ensure that the DNS Client service on this domain controller is configured and able to register valid host resource records with an authoritative DNS server for the domain.
More information about this best practice and detailed resolution procedures: http://go.microsoft.com/fwlink/?LinkId=131229

All Domain Controllers have zone updates rights on the master dns server, and according to the logfile updating zones works.
My DNS-Servers are running BIND 9.7.3-P3.

So this is presumably not a problem of the bind servers themselves, but still, does anyone have an idea how to get rid of the error messages?
Anyone know the checkbox to unset? I didn't find one.

With regards
Christian Melbinger

---
Ing. Christian Melbinger
Netzwerk & Security

WienIT EDV Dienstleistungsgesellschaft mbH & Co KG
A-1030 Wien, Thomas-Klestil-Platz 6
tel: +43 (1) 90405 47188
fax: +43 (1) 90405 88 47188
mailto:christian.melbinger at wienit.at

____________________________________________________________________________

WienIT EDV Dienstleistungsgesellschaft mbH & Co KG, A-1030 Wien, Thomas-Klestil-Platz 6,
FN 255974h, Handelsgericht Wien, DVR: 2109667, UID-Nr. ATU61260824
Persönlich haftender Gesellschafter:
WienIT EDV Dienstleistungsgesellschaft mbH, A-1030 Wien, Thomas-Klestil-Platz 6,
FN 255649f, Handelsgericht Wien, UID-Nr. ATU61296118
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