question regards to dynamic dns update
gtaylor at tnetconsulting.net
Sat Nov 14 06:34:28 UTC 2015
On 11/11/2015 02:55 AM, Julie Xu wrote:
> After I read some bind information, it looks like most configure example is use dhcp/ddns together.
DHCP and Dynamic DNS are quite often used together, but it is not a
You can easily have Dynamic DNS enabled on a (sub)domain (zone) that has
statically configured clients in it. The zone file won't get many
I have a number of zones with statically configured clients using DDNS
so that BIND will mange the DNSSEC for me.
With DDNS enabled, you can use the nsupdate command to add / change /
remove records from the zone.
> Please advice, if I can make a subdomain and make this subnet will contact the dns server to get a dns name dynamicly. I would like it:
> - every machine in this subnet will get a dns name automatically
Statically configured machines won't reach out to the DNS server to get
their configuration. That's where the "static configuration" comes into
> - the dns name is same as the host name
The hosts set their own name, and optionally give DDNS updates.
> - the dns name will automatically be removed after the ip offline or the hostname changed.
That's going to be difficult. There's no good way for a DNS server to
know when a host is offline.
Some DHCP servers will approximate this behavior by watching for a DHCP
release message and / or periodically pinging IPs that have been leased
to see if the client is still on line. Further, some DHCP servers will
reap DNS records for clients that are offline.
> If these action can be achive, please advice how can I configure it?
DDNS for a static subnet is simple, just follow any DDNS tutorial, minus
the DHCP part.
> Any comments will be appreciated
Grant. . . .
unix || die
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