NGINX

A virtual host in NGINX serves content based on settings found within  /etc/nginx/nginx.conf , we can use these settings to do things like handle SSL and pass traffic to other hosts if using a specific sub domain.

Basic NGINX Settings

These settings can be modified to suit the needs of your server. Below is a basic host nginx.confserving one configuration.page or application. Below, we route traffic to a docker container running on a localhost port.

    user www-data;
    worker_processes auto;
    pid /run/nginx.pid;

    events { }

    http {
      include mime.types;

      # Basic Server Configuration
      server {
        listen 80;
        server_tokens off;
        server_name sub.domain.com domain.com;

        location / {
          root /var/www/html;
          index index.html index.htm;
        }

        # Uncomment to pass for SSL
        #return 301 https://$host$request_uri;
      }
    }

If trying to route traffic, you can use a similar server {...} configuration alongside the above that specifies the sub-domain and IP / port to pass traffic to - 

# Private subdomain for routing custom ssh port
server {
  server_name sub.domain.com;
  server_tokens off;

  location / {
    include proxy_params;
    proxy_pass http://0.0.0.0:3333;
}