Hello! I have the following problem:
For now I have a simple set up; two servers: first acting as a reverse proxy and second hosting nextcloud. I tried to configure nginx server config, but when I go to "nextcloud.example.com" I get this message:

Secure Connection Failed

Error code: SSL_ERROR_RX_RECORD_TOO_LONG

(browser: firefox)
On different browser I get "Welcome to Nginx" page.

My /etc/nginx/site-available/example.com looks like this:

server {
listen 443;
server_name nextcloud.example.com;
location / {
proxy_pass https://192.168.0.123:443;
include proxy_params;
}
}

When I set port forwarding on my router Nextcloud works; also it has got its own SSL cert from certbot.

Can any of you guys help me?

Kazimierz Krauze

You are missing an certificate / SSL configuration ?

I would guess, the reason the browsers acting differently is because of them is connecting using https:// and the other one http:// ?

SSL_ERROR_RX_RECORD_TOO_LONG error typically indicates a problem with how SSL is being handled.

Okay, thank you for your answers.