why am I seeing update denied in Bind9 logs for dhcp clients ?

[Gregory Machin]

Thanks for taking time to explain.

A couple are widows the majority are Linux.

I have changed the client-updates.

Thanks

G

On Sat, Mar 3, 2012 at 12:35 AM, Simon Hobson <dhcp1 at thehobsons.co.uk> wrote:
> Gregory Machin wrote:
>
>> I have a ddns configuration with the dhcpd server writing dhcp clients
>> hostname and ip to the bind9 dns server. But i'm seeing a lot of
>> dhcp clients trying to writing into zones
>
>
> Windows clients by any chance ?
>
>
>>       zone "69.168.192.in-addr.arpa" {
>>       type master;
>>               file "/var/lib/bind/192.168.69.interenal.rev";
>>               update-policy { grant dhcp-server-key subdomain
>> 69.168.192.in-addr.arpa. ANY;
>>                                     grant * self * A TXT;
>>                               };
>>               };
>
>
> All I have is :
> zone "0.168.192.in-addr.arpa" in {
>        allow-update { key DHCP_UPDATER ; };
>        file "192.168.0";
>        type master;
> };
>
> Default on Windows clients is for the client to attempt to update the DNS -
> because "that's the way MS does it". You need to add "deny client-updates"
> (I think, check the man page) to your DHCP config for it to ignore clients
> requests to do their own updates.
>
> --
> Simon Hobson
>
> Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed
> author Gladys Hobson. Novels - poetry - short stories - ideal as
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