Do you know if this method would work with Apache HTTP Server using Mod_Proxy?  I'm trying this method, but I am uncertain what the configuration should be. Any ideas?

We will update the Nginx web server config file in the help center, which should fix the UI resources issue:

worker_processes  1;

events {
    worker_connections  1024;
}

http {
    include       mime.types;
    default_type  application/octet-stream;

    sendfile        on;

    keepalive_timeout  65;

	server {
        listen  80;
        server_name  localhost;
    
        location / {
            if ($query_string ~* ^portnumber=(\d+)(.*)$) {
            	set $port $1;
            	set $para $2;
            	proxy_pass http://127.0.0.1:$port$para;
            } 
            proxy_pass http://127.0.0.1:4000;
            proxy_socket_keepalive on;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";
    
        }	
        proxy_socket_keepalive on;
    }

    server {
        listen  443 ssl;
        server_name  localhost;
        ssl_certificate     "/opt/MF/MF_VTS/web/vts.crt";
        ssl_certificate_key "/opt/MF/MF_VTS/web/vts.key";
        ssl_protocols       TLSv1.2 TLSv1.3;
        ssl_ciphers         HIGH:!aNULL:!MD5;
    
        location / {
            if ($query_string ~* ^portnumber=(\d+)(.*)$) {
            	set $port $1;
            	set $para $2;
            	proxy_pass https://127.0.0.1:$port$para;
            } 
            proxy_pass https://127.0.0.1:4000;
            proxy_socket_keepalive on;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";
        }
    }
}

This request has been addressed as mentioned above, if there are gaps in functionality or product issues, suggest to open a new idea request or to submit a support case. 

Thanks 

The CSS & JS links are not resolved automatically and tend to work if the links that failed with HTTP 500 are updated to point to the host.name/?portnumber=4444. 

How to ensure the CSS, JS & other supportive files used by VTS to render the GUI is loaded properly after NGINX is configures?