Ngix reverse proxy pass authentication IIS

[evulcu]

Hello,
I'm trying to set up a reverse proxy with NGNIX on a Ubuntu Server. The
upstream server is IIS configured with basic authentication working only as
https since it has a 301 redirection configured on it.
Here is my conf file
server {

listen 80;
return 301 https://$host$request_uri;
}
server {
listen 443;
server_name fweb.biz;
ssl_certificate /etc/nginx/ssl/cert.crt;
ssl_certificate_key /etc/nginx/ssl/cert.key;
ssl on;
ssl_session_cache builtin:1000 shared:SSL:10m;
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
ssl_ciphers HIGH:!aNULL:!eNULL:!EXPORT:!CAMELLIA:!DES:!MD5:!PSK:!RC4;

ssl_prefer_server_ciphers on;
access_log /var/log/nginx/access.log;
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 https;
proxy_pass https://192.168.99.14;
proxy_read_timeout 90;
proxy_redirect https://192.168.99.14 https://fweb.biz;
}
}

I'm redirect to the upstream server and asked for credential but nothing
happens. Looks like the credential are not pass to the upstream server.
Please can somebody help me.
Thanks

Posted at Nginx Forum: https://forum.nginx.org/read.php?2,288000,288000#msg-288000