[PLUG] certificates, URLs, IP addresses

Paul Heinlein heinlein at madboa.com
Mon Mar 23 14:26:43 UTC 2020


On Sun, 22 Mar 2020, Keith Lofstrom wrote:

> MY FIRST QUESTION IS:  can multiple domains and multiple
> SSL certificates share one IP address?  I can rent more
> IP addresses, but I hope to avoid complication and cost.

Yes. The Internet search you want is for terms "server name 
indication" or "SNI". Googling "https sni" will probably get you in 
the right neighborhood.

SNI doesn't work with ancient http clients, but if you're concerned 
about SSL connections, that's probably acceptable for you.

> NEXT QUESTION:  what is a good ten page summary of how to
> set up and maintain SSL certificates in the simplest way?

By "set up" do you mean "roll your own" or "apply for a recognized 
one"?

For the former: https://github.com/OpenVPN/easy-rsa
For the latter: https://letsencrypt.org

-- 
Paul Heinlein
heinlein at madboa.com
45°38' N, 122°6' W


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