Problem with name resolving
lyle at lcrcomputer.net
Sat Jul 2 12:28:49 UTC 2011
On 07/02/11 04:37, Markus Feldmann wrote:
> Am 01.07.2011 22:43, schrieb Lyle Giese:
>> On 07/01/11 14:13, Markus Feldmann wrote:
>>> Am 01.07.2011 18:35, schrieb Lyle Giese:
>>>> You are right in that you only need one host at dyndns.org to update
>>>> your ip address, but you want to have two different websites. The
>>>> way to do that is with CNAME entries pointing to the host you are
>>>> updating at connect time.
>>> Do i need to open my firewall for port 53? :-( Is there another way?
>>> maybe to add two virtual hosts at dyndns.org with the same IP?
>>> regards Markus
>> I don't know dyndns.com services that well. I don't know what they
>> support or do not support directly.
>> Using an example, I have lcrcomputer.com. If I setup a dynamic dns host
>> with dyndns.org and wanted two host names pointing there, I would do
>> 1) setup a dynamic host at dyndns: host.dyndns.org
>> 2) in the LCRCOMPUTER.COM zone I would add two entries:
>> host1.lcrcomputer.com. in cname host.dyndns.org.
>> host2.lcrcomputer.com. in cname host.dyndns.org.
> In which zone file? "db.feldland.lan" or in "db.192.168.0" ? or in both?
db.192.168.0 is for reverse lookups. Mapping ip addresses to a host
name. 192.168.0.x is part of RFC1918 reserved ip addresses and should
never be exposed to the Internet.
db.feldland.lan is a private internal to your lan domain that is not
registered anywhere and therefore nobody out on the Internet should be
looking for hosts there.
In my example, LCRCOMPUTER.COM is a legal and registered domain name on
> And would it be possible to only allow the DNS-Server at dyndns.org and
> my provider to contact my bind9 server and not to the rest of the world?
> Or does it make no sense for name resolving?
We have not established a sane question for them to ask of your name server.
LCR Computer Services, Inc.
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