Hmokay
On one of my servers I used something like this :
location / {
proxy_pass https://192.168.x.y;
proxy_redirect off;
proxy_read_timeout 60s;
proxy_set_header Host the.desination.domain.tld;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
client_max_body_size 50M;
}