Using a certificate with a non- static Internet ip address

I have a broadband connection for domestic customers and my ISP will onl ygive static ip addresses to business users. It dont really want to pay nearly double what I am currently paying just to get a static address.

I know I can use one of the dyn-dns type services available. I currently use duck dns.

I have a  test lab at home and I am trying to set up servers which require certificates to work properly.

I dont think there is a way to use certificates with duck dns or an alternative. What options do I have to get this working.

My ip address is fairly sticky, so I suppose I could just edit my domains DNS record if my ip address changes.

Is there an easier way?
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Phil PhillipsDevOps ArchitectCommented:
Certificates are actually tied to domain names, and not IP addresses.  So, even if the underlying IP is changing, the certificate will still work as long as the domain name is constant.
roy_battyDirectorAuthor Commented:
Of course it is :)  So i suppose then my question is more about is there a way to automatically update my DNS record help with my ISP on the rare occasion that my ip address does change.
Phil PhillipsDevOps ArchitectCommented:
If you want to keep on using duck dns you can.  Some options are:

1. Get a cert for the duck dns domain
2. Get a cert for your own domain, and use a DNS CNAME to point it over to your duck dns domain

Option 2 is better since it's more flexible (you can move away from duck dns in the future).  Would cost extra if you don't already have your own domain.

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roy_battyDirectorAuthor Commented:
Option 2 sounds like what I am after. I have got a certificate for my domain. So I just need to set up a cname in my DNS Record pointing to the subdomain I have created under Duck DNS.

I did think that maybe this would be an option but presumed it would create some kind of mismatch of domain names, but having thought it over again just now probably not.
Phil PhillipsDevOps ArchitectCommented:
Yup, that should work :).

As an example, EE is set up the same way!

$ host is an alias for is an alias for has address has address

Open in new window

roy_battyDirectorAuthor Commented:
Perfect. Will give that a go.

Thanks for the help here.
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