Hi all,
I am new to using SSL certificates and trying to understand if I am setting my system up securely. Right now I have Hassio running on a RPI3B+. I set up DuckDNS to handle accessing from outside my network and that has worked well. I have the the fullchain and privkey files saved to the SSL folder so they can be used by other add-ons, again, that works how it should.
Where my confusion comes in is with how I connect an external pi that is actin as my database server and running InfluxDB/Node Red and a third Rpi running PiHole and acting as my DHCP/DNS server. Having a limited understanding of SSL certs, how do I set up my other two Pis to be able to talk to my HA server via SSL authentication? Do I use the same pem files I use for HA? Where do they go on the other devices as well?