Настройка nginx conf в качестве reverse proxy для облачного офиса

Конфигурационный файл nginx web.alteroffice.ru.conf

Config 1:

server {
       server_name web.alteroffice.ru;
       location / {
           proxy_buffering  off;
           proxy_pass         http://192.168.120.204/;
           proxy_redirect     default;
           client_max_body_size                4G;

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 $scheme;
       }
   listen 443 ssl; # managed by Certbot
   ssl_certificate /etc/letsencrypt/live/web.alteroffice.ru/fullchain.pem; # managed by Certbot
   ssl_certificate_key /etc/letsencrypt/live/web.alteroffice.ru/privkey.pem; # managed by Certbot
   include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot
   ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot
}
server {
   if ($host = web.alteroffice.ru) {
       return 301 https://$host$request_uri;
   } # managed by Certbot

   server_name web.alteroffice.ru;

   listen 80;
   return 404; # managed by Certbot
} 

Config 2:

sdfsd