Hopefully someone could help me with this issue I have been trying to resolve for more than a week.
I’m using HAProxy on PfSense with LetsEncrypt certificates.
The issue I have is as follows:
The SSL certificate is setup correctly and I’m able to assign the certificate to my PfSense web interface on port 10443 and it works fine.
I created a second certificate for a server on my network.
I have followed Tom’s guide to the letter for setting up the backend and frontend of HAProxy, but when I go to an SNI, it shows the certificate as valid but has a 503 Service Unavailable error. However, if I access the server via a different port (bypassing HAProxy) the site comes up, but with no valid certificate (as expected)
I’m clearly missing something, but can’t figure out what.
Any help would be greatly appreciated.