Dynamic DNS/CNAME question... can it be done?

Question

Level 1

15 points

Dynamic DNS/CNAME question... can it be done?

HI all, i have a question on a simple CNAME question that is bugging me..

Back in the old' days of QuickDNS Pro, that thing was a breeze to do, however, it seems a tad more difficult to do in 10.4.4 with OS X Server's BIND DNS...

I've got a perfectly working DNS server with several domain names in there, and on one particular domain, i want to put a CNAME record to forward home.mydomain.com to a dynamic DNS address hostname, say myhomeIP.no-ip.org.

So basicly, this thing should look like something like this (assuming that my domain name is mydomain.com)

myhomeIP.no-ip.org. IN CNAME home.mydomain.com

I've tried to see if this can be done thru the GUI (and i guess not) and i've manualy tried to modify the mydomain.com.zone inside /var/named/ to manualy enter the CNAME record, but this is getting nowhere...

So, can it be done? (Or i'm getting this the wrong way...)

Thanks a lot!

xServe G5 DP 2.3 Mac OS X (10.4.4)

Posted on Jan 15, 2006 3:55 PM

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Answer 1

MacLemon

Level 2

455 points

Jan 15, 2006 4:38 PM in response to Marc Sauve

Perhaps you forgot to increase the serial number for the zone when editing manually. You may want to have a look at webmin.com to have a nice and more capeable interface to DNS configuration.

You idea to CNAME home.yourdomain.tld to your DynDNS account will work. I have set up a few of my customers with dynamic IPs that way, so i can more easily find them for support.
Regards MacLemon

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Answer 2

David_x

Level 4

3,011 points

Jan 16, 2006 3:53 PM in response to Marc Sauve

myhomeIP.no-ip.org. IN CNAME home.mydomain.com>

Unless I have misunderstood, you have it back to front (I was going to type something else but the word filter would probably have denied it 🙂

The way you have it, if you ask it to resolve the 'myhome' name, it will reply with the IP of home.mydomain.com. I think you want it the other way round?

-david

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Answer 3

Marc Sauve Author

Level 1

15 points

Jan 31, 2006 12:13 PM in response to David_x

myhomeIP.no-ip.org. IN CNAME

home.mydomain.com>
ess I have misunderstood, you have it back to front
(I was going to type something else but the word
filter would probably have denied it 🙂

The way you have it, if you ask it to resolve the
'myhome' name, it will reply with the IP of
home.mydomain.com. I think you want it the other way
round?

-david

Ok, so basicly i should put that entry like that?

home.mydomain.com IN CNAME myhomeIP.no-ip.org.

That is exactly what i want to do, have my no-ip address mapped to my domain name so that i can quickly find my home ip address with my domain name and not with the no-ip stuff..

But i belive that there is no way to get that working with the GUI?

xServe G5 DP 2.3

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Answer 4

MacLemon

Level 2

455 points

Jan 31, 2006 3:03 PM in response to Marc Sauve

Afaik it's not possible with Server Admin. You may be interested in using Webmin. Just make sure to disconnect with ServerAdmin before manipulating DNS settings with Webmin and vice versa. Or you'll end up with two utilities overwriting each other's changes.
MacLemon

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Answer 5

David_x

Level 4

3,011 points

Feb 1, 2006 2:44 AM in response to Marc Sauve

Ok, so basicly i should put that entry like that?

home.mydomain.com IN CNAME myhomeIP.no-ip.org.

YES. (but with a period at end of home.mydomain.com. or just "home" without a period)

But i belive that there is no way to get that working
with the GUI?

Correct

However, if your DNS GUI is working OK at the moment and if you add it in manually to the mydomain.com.zone, you will get an error in the log "out of zone data. Ignoring". The GUI logs the error message and will not display the record in the GUI but WILL resolve it correctly.

-david

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