Help needed. Maybe unusual set up?

Help
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Hi Alex

Thanks for your help, but still can’t make it work.

Here is my set up:

My route has only one port forwarding:

192.168.1.110 to 80

192.168.1.110 to 443

So, 192.168.1.110 is open on my router.

The Caddyfile on 192.168.1.110 is:

  GNU nano 8.4                                   /etc/caddy/Caddyfile
# The Caddyfile is an easy way to configure your Caddy web server.
#
# Unless the file starts with a global options block, the first
# uncommented line is always the address of your site.
#
# To use your own domain name (with automatic HTTPS), first make
# sure your domain's A/AAAA DNS records are properly pointed to
# this machine's public IP, then replace ":80" below with your
# domain name.

photorpi.duckdns.org {
        reverse_proxy http://192.168.1.139
}

# Refer to the Caddy docs for more information:
# https://caddyserver.com/docs/caddyfile


The Caddyfile on 192.168.1.139 is:

```
# The Caddyfile is an easy way to configure your Caddy web server.
#
# Unless the file starts with a global options block, the first
# uncommented line is always the address of your site.
#
# To use your own domain name (with automatic HTTPS), first make
# sure your domain's A/AAAA DNS records are properly pointed to
# this machine's public IP, then replace ":80" below with your
# domain name.

:80 {
        # Set this path to your site's directory.
        #root * /usr/share/caddy
        root * /var/www/html

        # Enable the static file server.
        file_server

        # Another common task is to set up a reverse proxy:
        # reverse_proxy localhost:8080

        # Or serve a PHP site through php-fpm:
        # php_fastcgi localhost:9000
}

# Refer to the Caddy docs for more information:
# https://caddyserver.com/docs/caddyfile

My Duckdns looks like this:

photorpi to my exterior ip address 150.143.208.218

Now…

The only reply I get in the browser is from 192.168.1.139 on http (not on https):

Hello world from photopi on 192.168.1.139

All other request to 192.168.1.110, http://photorpi.duckdns.org/, or anything else fail.

Where you say

Where do I find or set the port number? I have no idea on where or how to do that.

So sorry about all these newbie problems!!!

Any help is really appreciated and I just have not been able to find a tutorial that matches what I want to achieve.