Bad gateway using nginx to access vaultwarden

I have an Unraid NAS for a couple of months now. I do not want it to be accessible from the outside to minimize the risk of being hacked

Among other things I installed Vaultwarden in a docker container and that#s when my problems started vaultwarden needs https, and to enable this you need a reverse proxy. So I installed Nginx and configured it to get a let's encrypt certificate. For that the NAS needs to be visible from outside.

I looked into creating my own CA and SSL certificates and ran into one problem after another. I think now I amat a point where I almost figured it out but I hit a wall.

So I created a CA and a certificate, that has all my subdomains in the SAN entry.

I installed the certificate chain on the Unraid srever and also on my clients so now when I access the Unraid GUI the connection is secure.

I also added the certificate to Nginx and configured the connection for vaultwarden to use it.

Nginx is running on 192.168.0.84

Vaultwarden on 192.168.0.82:4545

the DNS (using pihole) entry vaultwarden.home points to 192.168.0.84

When I now access the URL https://vaultwarden.home I get the error bad gateway.

I have no idea why this is not working. When I access vaultwarden using http://192.168.0.82:4545

I hope someone can help me or point me in the right direction.

Cheers,

Mav

Edited June 29, 20224 yr by geefle