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SSL As with dynamic dns

I have a home server that sits behind a dynamic IP address. I use the free dynamic dns service ( http://freedns.afraid.org/ ) so that I can access my server using the following (fake) hostname foo.example.com

I use bluehost to host a separate mycompany.com domain and used my DNS settings to configure CNAME to route traffic for mycompany.com to foo.example.com

What I want to do now is to throw the SSL certificate into the mix. The problem is that I do not know how to get a certificate. Some companies (godaddy) want me to associate a domain with a certificate. I do not know if it is mycompany.com or foo.example.com. Even if I chose one, it looks like the browser will complain about the mismatch.

Any insight would be great.

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If the website accesses as https://foo.example.com , you need a certificate for foo.example.com. If accessed as https://mycompany.com , you need a certificate for mycompany.com. If you need to access it with both names (for example, if one side is redirected to the other), you need a certificate containing both names.

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