Domain – SSL Cert for one domain and multiple IPs

domainload balancingssl-certificate

I have a question about SSL certs and multiple servers.

Question:

I have one cert, one domain name and I have many servers that hold my website code.

Example.com can point to IPs 192.168.1.1, 192.168.1.2,192.168.1.3, and 192.168.1.4. one for USA North, USA South, USA East, USA West.

  1. How do we apply this cert to that one domain name that can point to
    multiple IPs?
  2. Is a load balancing needed?

Best Answer

  1. The IP address is not relevant for SSL/TLS on websites. What is important is that the name the browser uses (e.g. example.com) matches the name listed in the certificate. So, if you install the cert on many servers and somehow make sure you can reach them all with the same DNS name, things should work.
  2. Does your application require load balancing? Would something simpler like RRDNS work? Anycast DNS entries? You need to know this, we can't tell you.
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