[Samba] DNC and DNS

Rowland penny rpenny at samba.org
Fri Jul 5 19:44:11 UTC 2019

On 05/07/2019 20:23, Robert A Wooldridge via samba wrote:
> On 07/05/2019 02:11 PM, Rowland penny via samba wrote:
>> On 05/07/2019 20:03, Robert A Wooldridge via samba wrote:
>>> On 07/05/2019 01:55 PM, Rowland penny via samba wrote:
>>>> I currently run tinydns and dnscache on my proxy machine.  I was 
>>>> hoping to keep that going.  I have a Windows Server2004 doing DC 
>>>> work right now.  Need to update that.
>>>>> -- 
>>>>> Bob Wooldridge
>>>> You can run a caching nameserver that forwards your AD dns zones to 
>>>> your AD DC, but you can only use the Samba internal dns server or 
>>>> Bind9 with a Samba AD DC. This is because the dns server must be 
>>>> able to update the records in AD and they are the only two that can.
>>> Can you point me to some document that explains how caching would 
>>> work with samba's dns in the manor you are suggesting?
>>> -- 
>>> Bob Wooldridge
>> We do not have anything in the wiki, but I have been working on 
>> something to add, see the attached file.
>> It is a bit rough around the edges (I haven't finished it yet), but 
>> it has had minimal testing and is based upon information supplied by 
>> someone who has been doing this for some years.
> What advantage is there in having a cache with samba?
> -- 
> Bob Wooldridge
The only advantage is if you have a high traffic environment, otherwise 
it isn't required, just use the DC's as the domain nameservers. If you 
do have a lot of traffic (most of which will have nothing to do with the 
AD domain (google etc) ), the caching/forwarding server will use data 
from its cache, or ask its forwarders, or if it is something inside the 
AD DNS domain, it will ask an AD DC.


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