I am trying to figure out whether I need a new internal IP, external IP or both to configure an IIS 7.5 server to run with two secure sub domains each using a different SSL cert, with both domains using port 443.
I have IIS 7.5 configured to route traffic properly to both domains (by adding a wildcard to the friendly SSL cert name so I can enable host headers over HTTPS) but the second secure domain is still trying to use the first domains SSL cert.
After researching I learned that I cannot have both domains running on the same IP address, using the same port, while having different SSL certificates. I have read that I can make it work by adding a second IP address to the server and assigning the domains to the different IP addresses.
The setup I want to have on the same IIS 7.5 server is this:
secure1.mydomain.com, Port 443, SSL Cert1
secure2.mydomain.com, Port 443, SSL Cert2
My question, is whether I need a new internal IP, or external IP, or do I need both to make this configuration work? I would rather not have to use a Wildcard Cert that houses both subdomains, because I have already purchased the individual Certs for the subdomains.
Thanks in advance.