NET::ERR_CERT_AUTHORITY_INVALID with and without SSL

Discussed in https://github.com/NginxProxyManager/nginx-proxy-manager/discussions/3404

^{Originally posted by laptopemt December 20, 2023}
I am running a home lab with some services that I would like to expose to the outside world

Nginx Proxy Manager is being hosted local within docker

On my TPLink router i have setup port forwarding for both port 80 and 443 to the IP of the Nginx Proxy Manager

I have setup the DNS records with Google domains to point to my public IP assigned by my ISP

Within in Nginx Proxy Manager i was able to get an SSL from lets encrypt

I setup proxy host to use the SSL and point to the private IP of the service i would like to expose.

When ever I try and pull up the domain i get the following error

NET::ERR_CERT_AUTHORITY_INVALID

Looking at the certificate that the browser is getting, the issuer is listed as tplinkwifi.net. I would expect this to be LetsEncrypt??

I dont see any setting within my router to correct this, i am not sure if this is a setting within Nginx Proxy Manager??

Any Suggestions?

Thank You
Michael

Start with linked Discussion #3404 and the reported certificate details, especially the browser issuer of tplinkwifi.net versus the expected Let's Encrypt certificate. Reproduce the described Docker, router port-forwarding, DNS, and proxy-host setup before identifying whether the behavior belongs to Nginx Proxy Manager. The issue needs a confirmed cause and a defined project change before completion can be measured.