[Samba] PTR Records in AD

Christian Naumer cn at brain-biotech.de
Wed Jul 3 12:27:25 UTC 2019

Am 03.07.19 um 14:15 schrieb Stefan Kania via samba:
> Hi Christian,
> normally I never do a reverse lookup for clients only for server and
> then the reverse lookup is static. If a customer want's it I do it this way:
> https://wiki.samba.org/index.php/Configure_DHCP_to_update_DNS_records_with_BIND9

Thanks for the input.

This is the way we have done it until now. However, this leaves out the
VPN users as they get their IP from the firewall not the DHCP-server.
And it also has a problem with laptops which have two interfaces
(wireless and wired). The interface that comes up last overwrites the
already existing entry (even if windows does not use the wireless
interface later and uses the wired with the higher priority).

Those are the reasons we wanted to switch.


> Stefan
> Am 03.07.19 um 11:41 schrieb Christian Naumer via samba:
>> Hello you all,
>> I have a general question. How do you guys handle the PTR record in AD
>> if the workstations update their own records? The A record is no problem
>> as this contains the name and is onyl updated by the corresponding
>> machine. However, the PTR record could be tried to update by a different
>> machine if that IP has been passed to a different machine by DHCP. With
>> windows AD with scavenging of the records this probably is a small
>> problem. How do you handle this?
>> Regards
>> Christian

Dr. Christian Naumer
Unit Head Bioprocess Development
B.R.A.I.N Aktiengesellschaft
Darmstaedter Str. 34-36, D-64673 Zwingenberg
e-mail cn at brain-biotech.de, homepage www.brain-biotech.de
fon +49-6251-9331-30  /   fax +49-6251-9331-11

Sitz der Gesellschaft: Zwingenberg/Bergstrasse
Registergericht AG Darmstadt, HRB 24758
Vorstand: Dr. Juergen Eck (Vorsitzender), Manfred Bender,
Ludger Roedder
Aufsichtsratsvorsitzender: Dr. Georg Kellinghusen

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