Nginx ssl reverse proxy with SNI

gistfile1.txt

server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;
    server_name yourdomain

    ssl_certificate           /etc/ssl/localcerts/yourdomain.crt;
    ssl_certificate_key       /etc/ssl/localcerts/yourdomain.key;
    ssl_ecdh_curve prime256v1;

    ssl_session_cache  builtin:1000  shared:SSL:10m;
    ssl_protocols  TLSv1 TLSv1.1 TLSv1.2;
    ssl_prefer_server_ciphers on;
    ssl_ciphers 'ECDHE+aECDSA+CHACHA20:ECDHE+aRSA+CHACHA20:ECDHE+aECDSA+AESGCM:ECDHE+aRSA+AESGCM:ECDHE+aECDSA+AES256+SHA384:ECDHE+aRSA+AES256+SHA384:ECDHE+aECDSA+AES256+SHA:ECDHE+aRSA+AES256+SHA';


    location / {
      proxy_set_header        Host $host;
      proxy_set_header        X-Real-IP $remote_addr;
      proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
      proxy_set_header        X-Forwarded-Proto $scheme;

      # Fix the “It appears that your reverse proxy set up is broken" error.

      proxy_pass          https://1.2.3.4;
      proxy_read_timeout  60;
      proxy_ssl_name $host;
      proxy_ssl_server_name on;
      proxy_ssl_protocols  TLSv1 TLSv1.1 TLSv1.2;
      proxy_ssl_session_reuse off;
    }

}

Thanks for this! - found it after hours of searching and trying to get nginx to reverse proxy to a IIS server that required SNI, interesting that the server_name directive doesnt require a ; in fact it breaks if you add it (i thought it was a typo in your file at first).

I did have to add ssl on; just before the ssl_certificate line though otherwise nginx would try to use the client cert instead of the upsteam cert.

Thanks again

Thank you, this worked for me.

All I had to do was add these 2 lines to my config

      proxy_ssl_name $host;
      proxy_ssl_server_name on;

I find it is ok to have a ; after server_name, contrary to what c-l-h states. Perhaps newer versions of nginx are more forgiving than the version they are running.

nginx version: nginx/1.15.8
built by gcc 4.8.4 (Ubuntu 4.8.4-2ubuntu1~14.04.4)
built with OpenSSL 1.0.1f 6 Jan 2014
TLS SNI support enabled

does it works???

https://nginx.org/en/docs/stream/ngx_stream_proxy_module.html#proxy_ssl_name
Syntax: proxy_ssl_name name;
Context: stream, server

in your example proxy_ssl_name is used in location

thank you ,it works.

Excellent, worked as per your example. :-)
Thank you.